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Human psychology is deeply rooted in a survival mechanism that instinctively reacts with fear toward the unknown.

This fear, often manifesting as hostility, arises when individuals encounter phenomena that defy their understanding. When faced with the unfamiliar—particularly that which cannot be categorized within existing frameworks—the response is often defensive aggression. The unfamiliar is perceived as a threat, and in the absence of comprehension, elimination becomes the perceived solution.

Approximately seven years ago, Earth began experiencing a biological incursion in the form of a parasitic organism of unknown origin. This entity operates by infecting human hosts, initiating a fatal transformation process. The host is systematically destroyed at a cellular and cognitive level, as the parasite integrates with and ultimately overrides the nervous system and bodily structure.

Upon successful assimilation, the parasite reconstitutes the human form into a highly adaptive biomechanical entity capable of extreme morphogenesis. These entities exhibit advanced shapeshifting capabilities, able to reconfigure their structure into a variety of forms and tools, limited only by mass and matter conservation principles.

Neurologically, the parasite erases the host's personality and emotional spectrum, replacing it with a singular directive: to propagate through predation and infiltration. These organisms display a rudimentary form of consciousness, retaining fragments of the host's memories for navigational or social camouflage but are devoid of empathy or emotional regulation. Their cognitive processes are entirely geared toward strategic murder and survival.

Park Jongseong is different.

He adjusted his glasses, eyes fixed on the monitor displaying his own cellular data. Streams of biological activity lit up the screen—cells dividing, mutating, adapting. He was lucky to have access to advanced medical equipment. After all, he was a doctor.

Humans are naturally afraid of what they don't understand. It's part of how the brain reacts to threats—if something doesn't fit into what's familiar, the instinct is fear, often followed by violence. That's how humanity responds to the unknown: eliminate it.

Jongseong had become the unknown.

He didn't know what he was anymore. His thoughts still felt like his own. He still felt emotion, empathy, fear, curiosity. Yet something deep inside had changed. His body was no longer entirely human. Something else lived in his blood.

But with Jongseong, something went wrong—or maybe something went right.

The parasite had merged with him, not replaced him. His cells had changed, yes—they were stronger, more adaptive. He could feel the shift in his physiology: faster reflexes, enhanced senses, the strange ability to alter parts of his body at will. Yet his mind remained intact. His identity remained intact.

He was both parasite and human. A hybrid. An anomaly.

From a biological standpoint, it shouldn't be possible. The parasite is known to override the host completely—shutting down the brain, rewriting the nervous system, restructuring tissue on a molecular level. But in Park Jongseong's case, the process didn't go as expected. His consciousness remained. His emotions remained. He wasn't fully human anymore, but he wasn't fully parasite either.

And that made him dangerous—to both sides.

Creatures like him were being hunted by the government. Classified as biohazards. The official statement warned the public daily:

"Be careful around your friends, relatives, family—anyone could be infected. Parasites look just like us, until they kill."

Murder cases connected to parasitic activity filled the news. Victims were often found mutilated beyond recognition, their internal organs rearranged, their skin marked with unfamiliar growths. Fear spread faster than the infection itself. Jongseong watched the reports from his house, barely breathing. Every passing day made it harder to stay hidden.

If the government found him, they wouldn't ask questions. They'd dissect him alive—tear his mutated body apart in the name of research and national security.

"How do you identify a parasite?"

That was the question echoed by media and scientists. For humans, the method was crude but effective: parasites can't fully mimic human hair. A simple hair sample under a microscope reveals the truth—parasitic tissue lacks keratin structure, instead made of a flexible protein-carbon lattice designed to replicate appearance.

But parasites had their own way of detecting each other. A subtle biological signal—an acoustic resonance picked up only through the inner ear. Like a hidden frequency, only recognizable to those with the altered cochlear structure. Jongseong had experienced it more than once. He would walk past someone, hear that strange, low echo in his skull—and feel a sudden, icy stillness in his blood.

He wasn't alone. Parasites were organizing. At first, they were random killers. Now, they were moving in packs—coordinated, methodical. Adapting. Evolving. And so is he.

"That'll be 700 won," the cashier muttered, not bothering to meet his eyes.

Jongseong kept his head down, slipping the coins onto the counter. No conversation. No eye contact. He took the plastic bag with a silent nod, his fingers tightening around the thin handles before he turned and stepped back into the cold night.

Even with the parasite inside him, he still felt hunger—raw, physical. His body demanded energy like any other, though now his metabolism ran hotter, faster. He still craved food.

He still felt the ache of sadness, the longing to return to something normal. Something human.

But that life was gone.

The night air of Seoul stung against his skin, the cold seeping through his coat. He moved with the crowd, head low, blending in with the blur of footsteps, voices, and passing cars. Every sound echoed. The parasite had enhanced his senses, and sometimes the world was simply too loud.

Then he felt it, a low, familiar vibration in his inner ear—a biological resonance only detectable by parasite-modified auditory systems. His breath caught, and a pulse of instinctual fear ran through him. He looked around carefully, eyes scanning faces, shadows, movement. One of them was nearby.

His pace faltered. That's when he saw you.

You stood out—not because of your appearance, but because of what you did. In the middle of the crosswalk, your hand casually brushed your ear. A subtle motion, barely noticeable to anyone else, but to him it screamed recognition.

You were a parasite.

His brows drew together. Something was off. Parasites usually acted in groups—hunting together, assimilating their targets with military precision. If you were one of them, you should've engaged him.

But you didn't. You kept walking, fast and purposeful. Almost like... you were running away.

Jongseong stayed still for a moment, the bag of food hanging from his hand, forgotten. His heartbeat was heavy in his ears, half fear, and half curiosity. Why would a parasite avoid confrontation?

Jongseong moved. Not fast, not slow—just enough to stay behind you without drawing attention. He weaved through the crowd with quiet precision, his eyes fixed on the back of your coat. The city noise drowned under the low pulse still humming in his inner ear. It wasn't strong. Just enough to confirm you were still nearby. Still parasite.

The further you walked, the thinner the crowd became. The bright shops faded behind them, replaced by rusted gates, shuttered storefronts, and flickering neon signs. This was the forgotten edge of the city. The place people passed through quickly. The place no one paid attention to.

You turned down a narrow alley.

Jongseong hesitated at the entrance. The cold bit harder here, funneled between brick and concrete. His fingers curled, feeling the familiar tension in his muscles—his body silently preparing to shift if needed. Bone could become blade in less than a second now. But he held it back.

He stepped in. The alley stretched narrow, damp, littered with the scent of oil, metal, and old rain. Pipes hissed from the walls. Ahead, your footsteps had stopped. You were waiting.

When he turned the final corner, he found you standing in front of a rusted service door leading into a forgotten subway access station.

You didn't move. Neither did he.

"If you're looking for another kin," you snarled without turning, "then get the fuck out and leave me alone. I'm not one of them."

Your voice was sharp making Jongseong's body tensed instantly. The shift in your tone, the unnatural dilation of your pupils, set off every instinct in him. His hand inched slightly to the side, fingers twitching, ready to reconfigure.

Then it happened. Too fast to follow with human eyes.

Your right shoulder warped violently—tissue splitting and reshaping into something jagged, organic, and grotesque. It extended outward, not as a limb but as a weapon—wing-like in structure, but edged with hooked thorns.

You lunged, Jongseong barely reacted in time, his arm snapping up, skin splitting as a skin liked carapace laced with tendon grew along his forearm—absorbing the blow with a sickening crack of thorn against hardened flesh.

He staggered back, eyes narrowed, breathing sharp.

"You kept your mind," he growled, muscles tensed, his cells humming beneath his skin, ready to shift again. "But you're still dangerous."

Your shoulder pulsed with unnatural motion, the wing-like appendage twitching as it began to fold back. "I don't want to be part of your kin," you hissed, your voice jagged with fury. "Leave me the fuck alone. I am not a monster like you!"

Jongseong's eyes widened. He barely had time to respond before you surged forward. The air tore around you as your body shifted mid-motion—bone spiking from your forearm like a serrated blade. You slashed.

He ducked, sparks flying as your weapon scraped against the metal wall. He twisted, arm reforming into hardened muscle and armor-like plating, launching a counterstrike aimed at your ribs.

You blocked with an organic shield that burst from your side—scaled and ridged like insect chitin. The impact sent both of you skidding back across the damp concrete.

Your eyes met again. Rage. Confusion. Pain.

Jongseong lunged first this time, his limbs reshaping with practiced speed—flesh snapping, tendons stretching. A blade grew from his wrist like a fang of obsidian, and he swung it toward your shoulder.

You caught it, barehanded.

Your arm, now half-shifted and armored, trembled with force as it held his blade in place. But what caught him wasn't your strength—it was your face. You weren't snarling anymore. You were breathing hard. Your eyes... they were terrified.

Your reaction wasn't instinctual. It wasn't predatory. You had hesitated. Controlled your form. Redirected the attack instead of going for the kill. Just like him.

Jongseong pulled back, staggering a step. His breathing slowed. "You're... like me."

You stood still, chest rising and falling. The bone blade on your forearm quivered, then receded slowly, melting back beneath your skin.

"Don't say that," you whispered, voice cracking. "Don't compare me to you."

But the truth was there—in the way your limbs didn't shift fully, in the way your face still held emotion, conscience, even after a violent clash. You hadn't killed him when you had the chance. You chose not to.

"I'm a hybrid," Jongseong whispered, "I'm not a monster. I'm not human either. I assume you are too."

You didn't answer right away. Your eyes flicked toward the tunnel, where the distant clicking echoed like something crawling just beyond the light. Then, slowly, you turned back to him. Your jaw clenched, the muscles in your cheek twitching like you were holding something in.

"I'm a human." It sounded more like a plea than a statement. "I was—" you paused, blinking hard, "—I was a person. I had a name. A home. I worked a job. I went to cafés and hated Mondays. I had a cat."

Jongseong didn't move.

"I wasn't this," you went on, your voice rising. "I didn't ask for it. I woke up one day and everything was... different. My skin felt wrong. I couldn't stop hearing things. Smelling things. My body... it started moving on its own. Changing. Splitting open."

Your breathing quickened. "And now I can feel it, all the time. In my bones. In my mind. Whispering. Pulling that doesn't belong to me."

Your eyes met his—wide, wet, terrified. "I don't want to be what you are."

Jongseong lowered his gaze for a moment. He understood that look. He'd seen it in the mirror more than once.

"I didn't want this either," he said quietly. He took a slow, cautious step forward, then crouched to your level, his voice soft—human.

"I was a doctor," he said, almost with a tired smile. "Worked long shifts. Rarely slept. I used to stress-eat... corn, of all things. Still do. I don't know why. Guess the parasite didn't kill that part of me."

You blinked, confused by the strange confession. But it grounded you, if only for a moment.

"I think about who I used to be all the time," he continued. "That guy who thought medicine could fix anything. Who didn't believe in monsters—just diseases, mutations, pathology." He paused, watching your face. "Then I became the thing we used to study. And I realized something... I'm still here. Somewhere beneath all of this."

His fingers lightly tapped his chest.

Your gaze dropped, lashes trembling as you stared at the space between your knees, the damp concrete still stained from your earlier strike. You didn't say anything right away. Your breathing was shallow—measured, like you were trying not to fall apart.

"I used to love the rain," you said quietly, almost to yourself. "Now it just smells like metal and rust and... blood."

Jongseong didn't interrupt. He stayed crouched, steady, watching you.

"I haven't slept in two weeks. Not really. I keep waking up in the middle of the night with my hands turned into something else. Blades. Claws. Once, it was... wings." You gave a bitter laugh, dry and hollow. "I think they were wings. They tore the ceiling fan clean off."

"I keep thinking if I ignore it, if I just pretend hard enough, it'll go away. But it's always there. Under my skin. In my head."

Jongseong's voice came calm, anchored. "You're not imagining it. It's real. And it's not going away."

Your hands clenched into fists. "Then what's the point of fighting it?"

He didn't answer immediately. He sat down fully, folding his arms over his knees, not trying to lecture you but to just exist beside you.

"I fight it because I still remember what it felt like to make people better," he said. "Because I don't want to lose that part of me. Even if it's buried under everything else." He glanced at you. "Because maybe... if I keep holding onto it, I can be something in between. Not human, not parasite. Something new."

You shook your head. "That sounds like a lie people tell themselves to feel less afraid."

"Maybe it is," he admitted. "But it keeps me sane."

Another silence settled in. Then, a small voice escaped you—quiet, brittle. "I used to sing. Just... badly. In the car. In the shower. Everywhere. And now when I try, nothing comes out. Like my voice doesn't belong to me anymore."

Jongseong looked at you. "That part's still there. Buried, but not gone."

You blinked rapidly, jaw tightening. For a moment, neither of you spoke. The air between you carried a strange weight—grief, recognition, something neither of you could name but both felt. The bond of shared monstrosity. Of shared humanity refusing to die.

Then, softly, Jongseong added, "We don't have to be monsters, even if that's what we've become. We get to choose."

You were quiet for a moment, staring down at the cracks in the pavement. Your voice came small, almost like you were afraid the answer would make it more real.

"How long have you been... like this?"

Jongseong's gaze drifted for a second, remembering. "Two and a half years," he said quietly.

You looked up at him, your voice trembling. "Two months. That's how long it's been for me."

He nodded, listening.

"I ran away from home when I realized what was happening to me," you continued. "I couldn't stay. I didn't want to hurt anyone. I couldn't even trust myself." You exhaled shakily, brushing your palm across your face as if trying to wipe the memory away.

"I ran into a parasite once," you said. "Fully changed. No humanity left. Said he'd been like that for two years."

"What did he do?" Jongseong asked, already suspecting the answer.

"When he felt that I wasn't like him... he didn't speak. He just attacked. Like I was an error. A mutation. Something that needed to be erased."

Jongseong's jaw tightened. "You barely survived."

You nodded. "He tore my side open. I didn't even realize I could heal until after." The memory made you shudder.

"I thought maybe I could hide. Blend in. Pretend I was still normal. But that encounter changed everything. I knew then... there was no going back."

Jongseong looked at you, really looked, and said gently, "You've made it this far on your own. That counts for something."

You laughed bitterly. "Does it?"

"It does," he said. "Because most wouldn't have."

"The parasite in us... it doesn't understand mercy. Or hesitation. The fact that you've held on this long, that you chose not to give in—that means you're still you."

Your eyes flicked to him, unsure. "And if I stop choosing?"

"Then I'll stop you," he said, not as a threat, but as a promise. You blinked, searching his face for cruelty and finding only empathy.

It was strange, in a quiet way—comforting—to be near someone like you. Someone who understood. That's how you would describe it. A sense of relief wrapped in unease. You were still hiding, but not really. Not anymore.

You learned his name is Park Jongseong. He told you in passing, but you held onto it. Jongseong, meaning "collecting stars." It made you smile softly, secretly. How fitting, you thought, for someone piecing himself back together from fragments of something once human.

He gestured toward a small kit laid out between you. "Try to relax. I'm going to insert a needle—just a quick sample," he said, already prepping the syringe.

You stared at him, arching a brow, half laughing. "You know I merged my body with blades, right? A needle isn't exactly nightmare fuel, Dr. Park Jongseong."

He let out a quiet breath of amusement, the corner of his mouth lifting into a subtle, reluctant smile. It was the first expression that looked genuinely human since you'd met him. Still, he moved with the calm, clinical precision of someone who'd done this thousands of times. His hands didn't shake, and his voice stayed even.

You extended your arm, the skin unusually smooth where it had once morphed—no visible scars.

He carefully inserted the needle into your arm. The sensation was oddly muted—your pain receptors dulled, altered by the parasite. Your blood didn't flow quite like before; it was slightly denser and darker.

"This should be enough," Jongseong murmured, capping the vial. "I'll isolate the DNA structure, run it against my own. I want to see how your immune system adapted. If your T-cells underwent the same mutations."

You looked at him curiously. "You think we mutated differently?"

"I think we merged differently," he said, eyes flicking to his portable scanner. "The parasite doesn't always follow the same pattern. In most hosts, it hijacks the immune system completely—overrides all genetic repair functions, takes full control. But in us..."

"It coexists," you said softly, finishing his thought.

He nodded. "Exactly. It integrates rather than eliminates. Your T-cells should be producing chimeric proteins—part human, part parasite. Like mine."

You tilted your head, intrigued despite yourself. "You ever seen that happen before?"

He shook his head. "No. Just us."

You both sat in silence for a moment, the quiet hum of his scanner whirring softly as it began processing. Data streamed across the small screen, lines of genetic code scrolling faster than most could read.

"It's weird," you said. "I hated this thing inside me. Still do. But sitting here... I feel like I'm finally studying it. Like it's not just happening to me anymore. I'm taking it back."

Jongseong looked up from the scanner. "Exactly. That's what I've been doing for two years. Trying to understand it."

You watched him work. There was a quiet intensity to the way he moved, so focused, almost surgical. His fingers danced over the scanner's interface, eyes tracking streams of data with an ease. But your gaze wasn't on the screen.

You studied him. His nose was too pointed, almost sculpted. His jaw, sharp like it had been carved with purpose. The light caught on the angles of his face, shadows tracing across his skin like ink. His raven-black hair fell slightly over his brow, just messy enough to look deliberate, and yet... it suited him perfectly.

And his eyes, sharp, eagle-like. At first glance, they looked cold. Angry, even. The kind of gaze that could cut. But as you kept watching, you saw through it. There was no rage behind them. Only exhaustion and softness.

"I can feel you staring," he said suddenly, not looking up from the scanner.

You blinked, caught off guard. "You have a strangely symmetrical face."

He smirked faintly, still focused on the readout. "Years of stress must have evened me out."

"I think you're too pretty to be a walking biohazard," you added dryly.

That made him glance at you, a flicker of amusement breaking through the wall of control. "That's not usually the first thing people say when they see me split my arm open."

You tilted your head. "It's the second thing."

He huffed a quiet laugh. Just for a moment, you saw it—the man beneath the monster. The one who used to save lives, who still wanted to, even if he didn't say it aloud.

"I used to keep my reflection covered," you admitted, your voice softening. "Couldn't look at my own eyes. I was afraid one day they'd stop looking like mine."

He didn't respond right away. Just stared down at the glowing genetic map on the screen, jaw tight. Then he said, "Your eyes still look human to me."

Your cheeks flushed, the blood rising unbidden. A strange irony, considering how much your blood had changed, but it felt too human. 

After the blood draw, he insisted on running a full assessment—"purely diagnostic," he said, slipping back into the old habits of a physician. His voice turned more analytical. But his touch remained cautious, and gentle.

You sat on the metal examination table, legs swinging slightly, eyes drifting over the cluttered shelves and half-finished notes pinned across the wall. He moved in the background, scanning a new set of neural data. But your attention wasn't on the screen.

"Do you feel lonely in here?" you asked softly, not looking at him.

He didn't answer immediately. Just continued working for a few seconds, then said, "I don't notice anymore."

You didn't believe him. You don't think he did either.

After another minute passed, your voice returned, gentler. "What happened? When you first realized you were like this? Did you just... stop being a doctor?"

Jongseong paused, then turned slightly, leaning back against the counter. The light from the scanner flickered behind him, "I was attacked by a gang," he said flatly. "Back alley. They thought I had money. I lost count after the twentieth cut."

You stared at him, stunned.

"I had thirty-five knife wounds across my torso, chest, and abdomen," he continued, "deep lacerations. Organ damage. Multiple perforations. I was dying. I think... I was dead."

You swallowed hard, eyes fixed on him.

"I assume the parasite entered my body when I hit the threshold," he said. "Critical condition. Immune system collapsed. Internal bleeding. It's my theory that the parasite thrives more when the host is on the edge—when the system is weak enough to take, but not too far gone to recover."

His gaze lowered to your arm where the sample had been drawn. "My theory is... I wasn't strong enough to resist it. That's why I didn't die like the others. The parasite didn't need to fight me. It just filled in what was already broken." 

"So, you think it chose you because you were weak?"

He met your eyes again. "I think it needed someone weak. It needed space to grow."

A pause. His voice softened. "But maybe... maybe that's also why we didn't become them. Because we didn't fight it like a war. We... merged."

You shifted slightly, the sterile metal of the table cold under your fingertips. "You think that's why I'm still here, too?"

Jongseong nodded. "Your neural scans still show strong activity in the amygdala, the hippocampus. Emotional processing, memory retention. That's rare in infected hosts. Most show degeneration within a week of full takeover."

"And mine?"

He turned the screen slightly to show you. "Yours are still human. Intact. Maybe even more responsive than average."

You blinked. "So I'm... emotionally stronger?"

He gave a faint, crooked smile. "Or just more stubborn."

You laughed under your breath, soft eyes lingering on him, the curve of your smile not wide, but real. For a moment, Jongseong couldn't look away.

There was something in your expression that unsettled him more than any mutation, more than any parasite or hybrid anomaly. It was the trace of comfort. The ghost of peace in a body that shouldn't have had room for it.

On another day, beneath the soft whir of outdated HVAC vents and the mechanical rhythm of genetic sequencing equipment, your voice stirred.

"What happens to the parasite inside us?" you asked. "Where does it go?"

He didn't answer at first. Jongseong stood across the room, bare-chested, his skin partially illuminated by the sterile blue glow of the diagnostic interface. He was facing a mirror bolted to the wall—cracked slightly near the corner, the silver peeling at the edges. He hadn't looked into it for a long time. Not really.

But today, he was watching himself. And in the reflection, he saw you, standing behind him, the question still hovering in the air. He held your gaze for a second through the mirror, then turned back to his own reflection.

"I don't know," he said eventually. His voice was calm, but not detached. He was thinking—hard. "At least, in my case, I don't feel anything inside anymore. Not like those early days, when it felt like something was pushing... crawling beneath my skin. That pressure's gone."

He paused, lifting his hand, flexing his fingers slowly—watching the tendons shift under his skin.

"It's like... I consumed it," he said quietly. "Or maybe my body did. My cells stopped resisting. Stopped treating it as foreign. They absorbed it."

"You think your immune system... adapted?"

"Yes," he said, nodding faintly. "I've run thousands of blood scans. The parasite's original RNA is still there, but it's no longer dominant. It's dormant. Integrated. Like mitochondria."

You raised your brow. "You're saying it's symbiotic."

"More than that," he replied. "It's part of my physiology. My T-cells don't fight it. They use it. They've evolved—specialized to incorporate its functions. Shape-shifting, cellular regeneration, neural acceleration. My body didn't reject the parasite."

The parasite didn't dominate him. It became part of him.

You exhaled slowly, your voice soft, almost like you were speaking to yourself. "You're still human, after all..."

He didn't respond, his gaze lingered on you.

You looked down at your hands, turning one over, flexing your fingers. "You and the parasite... you didn't fight each other. You merged." You hesitated, the word strange on your tongue. "I don't even know if merge is the right term. That makes it sound clean. Voluntary."

Jongseong turned to face you fully now, taking a slow step closer. "It wasn't clean," he said. "And it sure as hell wasn't voluntary."

You looked up at him again.

"It was pain. Constant. Days of fevers, hallucinations, muscles tearing themselves apart. My nervous system was rewriting itself in real-time. I could feel my own memories slipping... then coming back sharper. Warped, like they'd been filtered through something else."

He tapped his temple once. "I didn't think I was going to survive it. I shouldn't have. But something inside me didn't break. It adapted. And when the parasite realized it couldn't overwrite me, it... integrated. Not by choice. By necessity."

Your brows furrowed slightly. "You're saying it didn't want you like that?"

"The parasite wants dominance," Jongseong said. "Control. But when it senses it can't win, it changes strategy. Tries to preserve itself through compromise. It's not a thinking organism, not in the way we are—but it learns."

You nodded slowly, eyes drifting to the cracked mirror behind him. "Then maybe it's not about merging or fighting. Maybe it's about outlasting it."

He studied you carefully, the muscles in his jaw flexing just slightly before he spoke.

"Exactly. If you can hold on long enough, if you can stay yourself through the pain... you don't lose. You evolve."

You looked down again, thinking of all the moments you thought you were slipping. All the nights your body changed without your permission. All the times you'd woken up shaking, afraid of your own skin.

And yet... you were still here.

You looked down at your hands, flexing your fingers slowly. The skin looked normal now. "My hand hurts sometimes," you admitted, voice quiet. "It's like... a pressure building under the bone. I can control my shifting, but sometimes it feels like something else is doing it for me."

Your eyes lingered on your arm as if it might betray you in the next breath.

"I feel like I'm not me."

"That's normal," he said. "You're still only two months in. Your body's not fully stabilized yet. It takes time. The neural pathways between your conscious mind and the parasite's reactive systems are still syncing."

You glanced up at him. "That sounds way too clinical for my hand turns into a blade without asking."

He smirked faintly. "Point is—you'll get used to it. Eventually, the signals align. You won't have to fight for control. You'll just be in control."

You hesitated, chewing the inside of your cheek. "But what if I don't?"

His smile faded, but his expression didn't turn cold. "Remember what I said when we first met?" he asked.

You nodded slowly, eyes narrowing as the memory stirred. Jongseong gave a soft tired smile. "I'll stop you."

You stared at him, reading the weight behind the words. "And you'd really do it?" you asked.

"If it came to that," he said, without hesitation. "If you lost yourself completely—if there was no coming back—then yeah. I would."

"But not because I see you as a threat," he added. "Because I'd want someone to do the same for me."

"I don't want to become something I'd have to be stopped from," you whispered.

"Then don't," he said simply.

Another day blurred into a week, and somehow, it became routine.

You and Jongseong were always near each other now. You simply showed up, and he never asked you to leave.

Every morning, without fail, you arrived at his doorstep. Sometimes barefoot, sometimes holding a plastic bag of random things you'd picked up—food, spare clothes, old electronics scavenged from forgotten corners of the city. Always with that same wide smile and a casual wave, like the world hadn't tried to erase you.

His home sat far from the crowded parts of Seoul, nestled in the quiet sprawl of the outer districts—secluded enough that no one asked questions, yet comfortable in a way that surprised you. It wasn't sterile or abandoned. It was... lived in. Warm wood tones, clean tile, books stacked in corners, a faint smell of roasted coffee in the mornings.

You didn't expect someone like him to have soft blankets and expensive sheets. But then again, he had been a doctor. Years of relentless work had filled his bank account even as it slowly emptied him. He rarely touched the money now, except to keep the house running and the lab functional. The rest stayed untouched, gathering dust, like a forgotten version of himself.

Still, his kitchen was well-stocked. His bed was always made. And now, somehow, you had become part of that space.

One quiet afternoon, sunlight filtered through the wide windows, casting long golden shadows across the hardwood floor. You stood barefoot in his living room, playfully holding your arm out as it began to shift.

Jongseong watched from the couch, sipping lukewarm tea, his eyes narrowed in equal parts curiosity and caution.

"It's my first time encountering someone who can shape their hand into wings," he said.

You smirked and raised your hand, flesh trembling, tendons coiling and restructuring. The skin along your forearm peeled open in seamless, silent motion, splitting into more organic. A full wing unfurled—sleek and wide, nearly as tall as you. Its edges were curved like a crescent, the shape aerodynamic but jagged, ringed with short, blade-like protrusions.

It was the color of your skin, yet it glinted faintly in the light.

"Most parasites use their heads," Jongseong murmured, leaning forward slightly. "They split open like flower petals—exposing core structures for attack or communication."

He stood and stepped closer, gaze fixed on your transformed arm. "But this... this is different. It's not just offensive. It's built for movement. Flight, maybe. Or at least gliding. Your body's adapting beyond the base strain."

You watched his fascination with a faint grin. He spoke like a scientist.

"Does your head still hurt?" he asked, finally meeting your eyes.

You hesitated for a moment, then shook your head. "Not anymore," you said softly. "I started doing what you told me. Focusing on breathing. Slowing everything down when it starts building up."

He nodded, approving. "The headaches come from pressure. When the nervous system tries to regulate a function it doesn't fully understand. But when you center your breathing, you give the brain a stable pattern—something to anchor the mutation against."

You laughed a little. "You sound like a meditation app."

"Doctor first," he replied, raising a brow. "Monster second."

You folded the wing back into your arm slowly, watching as the skin sealed over again, leaving no sign it had ever been anything else. Jongseong handed you a towel to wipe the sweat off your hands—it wasn't painful anymore, but it still took effort.

"Do you ever get tired of analyzing me?" you teased, dabbing your brow.

"Not yet," he said. "You're the only other hybrid I've ever met. Every reaction you have, every adaptation—it all tells me more about how this thing works."

You leaned back against the kitchen counter, looking at him with warmth. "So I'm your favorite test subject?"

He smiled faintly. "You're the only one who smiles back."

You started living around him—and it wasn't planned. It just... happened.

There was no formal moment when it became your place too. You simply never left. You came in, stayed for a while, and then stayed a little longer. Your bag ended up in the corner of his hallway. A change of clothes appeared on the back of his chair. Your toothbrush found its way into a cup next to his. No one said anything.

His laboratory is tucked beneath the basement. Stainless steel counters were cluttered with vials, blood samples, biofeedback equipment, and an old centrifuge that rattled every time it spun. Some walls were covered with whiteboards, sketched with frantic genetic maps, neural networks, protein structures, and lines of code that only made partial sense to you.

You stood in the doorway for a long time watching him. Despite not wearing a coat or a stethoscope anymore, he was still a doctor. He spent hours down there, alone, dissecting the mystery of what you both had become. Studying the hybrid genome, comparing tissue reactions, tracking metabolic rates, rebuilding broken sequences.

He never said it, but you knew he wasn't doing it for science.

He was doing it to keep himself sane.

So, you stayed. And while he worked, you started moving through the rest of the house. Dust had gathered in the corners of rooms he didn't use. Shelves were layered with months of settled particles, and forgotten books lay unopened beneath it. So you cleaned. One room at a time.

You cooked, mostly for yourself at first. But eventually, you started making enough for two. He always ate. Silently, usually. But he ate. Sometimes with a quiet compliment, sometimes with a small smile.

Later, you found the backyard—overgrown, wild, and tired. The flower beds were choked by weeds, the soil cracked from neglect. You didn't ask permission. You just started clearing it out. Pulling weeds. Watering the roots that still had life left in them. Then you bought seeds, colorful ones: snapdragons, asters, cosmos. Something bright. Something that still dared to bloom.

He noticed, of course. But he didn't stop you.

Sometimes, at night, when the house was still and the garden smelled faintly of wet soil, you found yourself staring at the ceiling of the guest room—Jongseong's oversized hoodie draped around your shoulders, warm with his scent—and wondered:

Is this what being human still feels like?

You asked yourself the question over and over, unsure of the answer. You still laughed. You still dreamed. You still loved food, flowers, music. You still worried.

Your mind drifted to things you hadn't let yourself think about in weeks. Your mother. Your cat. Your home.

The lie you told when you disappeared—telling your family you'd run off with someone. You'd sent one message. Just one. And never replied again.

Do they hate me for it? you wondered. Do they think I'm alive? Do they sit at the dinner table and leave your place empty, hoping?

The thought made you smile—but it was the kind of smile that didn't reach your eyes.

You snorted under your breath, turning onto your side.

Because now, in some twisted, literal sense, you were living with a guy. A guy who wasn't exactly human anymore. A guy who slept only four hours a night and spent the rest of his time trying to outsmart biology. A guy whose hands could become blades. Whose eyes still softened when he thought you weren't watching.

A guy who hadn't kicked you out. Who never would.

"You can shift your hands without blades?"

Your eyes widened as you stared at Jongseong, the question tumbling from your lips. The very idea felt foreign—impossible, even. Your own shifting had always come with sharp edges, bone-splitting pain, and the quiet terror that you might lose control if you shaped too far.

Jongseong glanced down at his hands, calm and controlled. Then, with a quiet exhale, he lifted one hand and extended it toward you, palm up. "Watch," he said simply.

His dark eyes shifted—pupils dilating slightly, the irises deepening in color until they almost looked black, consuming the natural brown. You knew what that meant. It was a physiological marker—hybrid activation. Your eyes did the same when you shifted. His were sharp, but not hostile, focused, but unthreatening.

The structure of his hand started to ripple not violently, not like yours usually did. No sharp angles, no sudden protrusions of bone or blade. The skin thinned and stretched, flowing in a fluid-like motion that reminded you of melting wax. It wasn't grotesque—it was graceful.

His fingers elongated and curved slightly. From the base of his palm, tendrils began to unfurl—slender, flexible, organic. Not quite like vines, not quite like tentacles, but something in-between. Soft ridges lined their surfaces. They pulsed faintly with life, reacting to the air, to temperature, to you.

They didn't glint like blades. They didn't threaten. They moved with purpose.

Your breath caught as you watched, caught between horror and awe.

"How...?" you whispered.

Jongseong didn't smile, but there was a quiet light in his eyes. "The parasite doesn't only build weapons. It builds tools—if you teach it to."

You stepped closer, cautiously, drawn to the strange, mesmerizing movement of his altered hand. "I thought it only knew how to kill."

"So did I," he said. "At first. But then I started thinking like it. Observing. Not just resisting. It reacts to survival instinct, yes—but it also responds to intention. Will."

He slowly closed his hand, the tendrils retracting fluidly, vanishing back into his skin as the flesh reformed and returned to normal.

You blinked, letting out a slow breath. "Wow. That's impressive but... completely useless," you said, your voice laced with sarcasm.

Jongseong's eyes returned to their usual deep brown, pupils shrinking, the hybrid dilation fading. He looked up at you, a beat of silence passing then he laughed.

It was soft, unguarded. A sound you hadn't heard often from him, but when it came, it felt genuine, surprisingly warm. "Well, thanks," he said, raising an eyebrow. "Glad to know my non-lethal biological innovation gets such rave reviews."

You shrugged, trying not to smile. "Sorry, Dr. Frankenstein. I just can't think of a practical use for creepy space noodles."

"Tactile sensory extensions," he corrected with mock offense. "They can be used to detect surface tension, pressure shifts, chemical traces—"

"So basically... weird science-fingers."

Jongseong gave you a long, theatrical sigh, one hand dragging down his face in mock despair, though the amused curve of his mouth betrayed him.

"You know what? Fuck it," he muttered, turning back to his workstation, but not before you caught the upward twitch of his lips.

Another month drifted by.

You woke, cooked, trained, experimented, and sometimes just existed with Jongseong in quiet companionship. The world outside still cracked and groaned with danger, but within the walls of his house, it was a different season.

And outside, life was starting to bloom.

The garden you once cleared had transformed. Where dry soil had stretched beneath tired weeds, color now flourished. The seeds you planted with no real hope had taken root. Soft petals in pinks, purples, and golds opened under the late spring sun, nodding gently with every breeze. You had come to love the quiet act of watering them in the morning, a grounding ritual. Something beautifully, stubbornly normal.

This morning, as dew still clung to the flowerbed leaves and your fingers dripped with the cool mist from the watering can, a small sound broke the usual silence.

A tiny cry. High-pitched. Fragile. You turned, instinctively alert. But it wasn't danger waiting for you in the corner of the fence.

It was a kitten. A small, orange-furred ball curled beneath the bushes—wide green eyes blinking up at you, damp fur clinging to its sides. It looked no older than a few weeks, its tiny ribs shifting with every shaky breath.

"Awww," you murmured, your voice softening as you crouched slowly to its level.

The kitten tilted its head but didn't run. You extended a hand carefully, fingers open, palm low.

"Hey, sweetheart... Where's your mommy?" you whispered.

It answered with a soft meow, barely more than a squeak, and nudged its head forward until it touched your fingers. Warmth bloomed in your chest, before you realized what you were doing, you scooped it gently into your arms, pressing it to your chest.

You didn't hesitate. You brought it inside.

When Jongseong stepped out of the lab hours later, adjusting the settings on his neural scanner, he stopped in the middle of the hallway.

You were sitting cross-legged on the couch with a towel-wrapped bundle in your lap. The orange kitten, freshly cleaned and fed, purred softly as it nuzzled your hand.

"You brought home a cat," he said flatly, blinking.

You looked up at him, eyes wide with innocent pride. "I named him Jongjong."

His expression flickered. "Jong... jong?"

You nodded with complete seriousness. "Because he's small. And soft. And a little grumpy."

Jongseong blinked again, then exhaled through his nose, half a laugh, half disbelief. "I can't decide if I'm offended or flattered."

"Oh, definitely flattered," you said with a grin. "He's the cutest thing I've seen since I moved in."

The kitten let out a mew, as if to confirm the sentiment. Jongseong stepped closer, crouching beside the couch to get a better look. The kitten stared back at him, unblinking, then gave a dramatic yawn and immediately fell asleep on your lap.

"He trusts you," Jongseong said, softer now.

You looked down at the little creature and ran your thumb gently between its ears. "He doesn't know what I am."

Jongseong was quiet for a moment. "Maybe that's the point."

You glanced at him.

"Maybe he just sees what's real," he added. "And not what we're afraid we've become."

You didn't answer right away. You just watched Jongjong breathe, tiny chest rising and falling against your arm, and felt the quiet weight of peace settle in the room like sunlight through the window.

Jongseong had spent years alone his house, surrounded by machines and memories. He thought solitude was necessary, that isolation kept him safe. That by keeping others out, he could contain the thing growing inside him, the part of him that wasn't entirely human anymore.

That was why, when you first asked him if he ever felt lonely, he hadn't known how to answer.

Now, he had an answer.

Yes.

Because since you arrived, he'd started to remember what it felt like not to be alone. And that contrast made the emptiness he'd grown used to feel sharper, heavier in retrospect. The silence he once embraced had been suffocating. But he hadn't noticed until it began to lift.

You filled the space with little things—sounds, gestures, life. The clink of ceramic mugs in the morning. The quiet murmur of your voice as you read out diagnostic data. The rustle of your clothes as you passed him in the hallway, always brushing just a little too close, like your gravity had started to pull on his.

He never told you that he started waking up before his alarm—not for research, but to hear you moving through the house. The sound of water boiling. The soft click of the stove. The faint hum of your voice when you thought no one could hear.

He never mentioned how he started leaving notes near your table. Little reminders. Jokes hidden inside formulas. Once, a crude sketch of a protein chain that somehow resembled a flower. You'd found it, looked at him with one raised brow, and said nothing, but your smile had lingered for hours.

Maybe you already knew.

Because some nights, when the house fell silent again—when the tunnel lights above the basement flickered and the lab's hum faded into a deeper hush—you would sit beside him on the couch, not asking questions, not filling the air with unnecessary words. Just being there. Shoulder to shoulder. Warm. Quiet.

And the silence didn't feel empty anymore.

"Peek-a-boo!"

Jongseong spun around and froze.

Your face had split clean down the middle, skin peeled open like flower petals under pressure, revealing the intricate folds of your brain, glistening and wet. Thorned tendrils coiled from within the exposed cavity, twitching slightly as if sensing the air. Despite the grotesque transformation, one half of your mouth was still smiling, playful, unbothered, as if this was just another joke between the two of you.

And somehow, impossibly, Jongseong found himself staring—not with fear, but with a strange, quiet awe.

Even like this warped, twisted, exposed, he still thought you were beautiful.

Terrifying, yes.

But beautiful.

Jongseong let out a sigh and pressed his lips to the rim of his coffee mug, hiding the curve of his smile behind it. He didn't laugh—barely. It wasn't that it wasn't disturbing. It was. You looked like something torn from a biology textbook on alien evolution.

With a twitch of muscle and membrane, your face knit itself back together, seamlessly folding in. The thorns retracted, the skin closed, the tremors stopped. You bounced on the balls of your feet, practically glowing with excitement.

"I learned that yesterday!" you said, beaming. "Can you do that too?!"

You looked at him like a child begging for a party trick, eyes wide, shining with that strange joy that came with discovering just how far the body could stretch before breaking.

Jongseong tilted his head, smile lingering at the edges of his lips. He set his coffee down on the lab table and stood slowly. "It's not exactly the same," he murmured, voice low and calm, "but... sure."

His jaw tightened, and for a moment, nothing happened.

Then his skin split—not down the middle like yours, but in five clean diagonal lines across his face. The motion was quiet, each line peeled open slightly, like vents adjusting to pressure. From the top of his forehead, the bone shifted and stretched, revealing a sliver of cerebral tissue beneath a thin veil of skin—pale, veined, faintly glowing. A single blade unfolded with a smooth, mechanical grace, jutting forward from the frontal bone, not sharp enough to kill, but certainly enough to threaten.

"That's... beautiful," you whispered.

He let the mutation retract slowly, each fracture sealing with precision. No blood. No pain. Just practiced control.

"I thought we were past the point of calling brain blades 'beautiful,'" he teased, reaching for his coffee again.

You shrugged. "I think we're past the point of pretending we're not fascinated with each other."

That silenced him for a second. You stepped in a little closer. Not touching—just close enough to share breath. Close enough to see your reflection in his eyes. "Is that why you looked at me like that?" you asked, voice quieter now. "When I split open?"

Jongseong didn't answer immediately. He studied your face—not the skin, not the features, but the you beneath it. The remnants of humanity still clinging to something that should've been lost. The way your voice still held inflection, still carried joy. The way your smile wasn't entirely biological, it came from memory, not muscle.

"Yes," he said finally. "Because no one's ever shown me something monstrous... and looked so alive doing it."

You didn't move. Neither did he.

You stood there, close enough that you could hear the soft intake of his breath, the quiet thrum of his altered heart beneath his ribs, beating in a rhythm that no longer matched human biology... yet somehow still made your chest ache.

You reached up slowly, not asking permission, not speaking, just brushing your fingertips along the faint lines that remained on his cheek. The skin was smooth, impossibly warm, as if something still lived just beneath the surface, twitching, waiting. He didn't flinch. If anything, he leaned into your touch, just a fraction subtle enough to be instinct, but intentional enough to mean something.

"You're always so careful," you whispered, your voice barely more than breath.

Jongseong's eyes met yours. "If I'm not, I might hurt you."

You smiled faintly. "Maybe I don't mind."

That earned a small, broken sound from him. He reached up, slowly, carefully, and took your hand in his. His thumb traced the inside of your wrist.

"I don't know what this is," you said softly, searching his face. "I don't know if it's real or just chemical—just mutation convincing us we're closer than we are."

His fingers laced between yours.

"Maybe it is chemical," he said. "But if that's true, then so is every heartbeat. Every kiss. Every touch humans have ever shared. Maybe we're just... another version of it now."

You stared at him for a long moment. Not a word passed between you. Then you leaned forward slowly, testing the air between your mouths like it was charged and he met you halfway.

It wasn't a desperate kiss. It wasn't rushed, or hungry, or tangled in panic. It was precise.

His lips were warm—almost too warm. His body still carried that inhuman heat, like the parasite burned deeper than blood. But you kissed him anyway, because in that heat, you felt something real. Something yours.

He drew you in gently, hand sliding behind your neck. You felt your body respond, you tilted your head, lips parting slightly, angling the kiss deeper, fuller. He tasted like cheap coffee and the metallic hint of sterile air, but it didn't matter.

"I used to think I'd die without ever feeling something like this again," he murmured.

You ran your fingers along his jaw, still touched by the faint lines of his previous transformation. "I thought I had already."

He smiled against your skin. "Guess we were both wrong."

Then his mouth was on yours again, this time deeper, more certain. Not rushed, but hungry. His hand slid down your spine, fingers curling at your waist as he drew you in until there was nothing but heat between you.

You gasped softly against his lips, the sound spilling from you before you could stop it. Your hands moved up, wrapping around his neck, fingers threading through his hair. He took that moment, his tongue slipped past your lips gliding against yours.

His hands were on your thighs, firm but gentle, and you responded without hesitation. In one motion, you jumped, legs wrapping around his waist, your bodies moving together. He didn't break the kiss—not even for a second—as he carried you with careful steps.

And then you felt it: the shift beneath your back, the familiar give of fabric and old springs. The soft mattress beneath you.

You exhaled as your spine met the bed, his weight settling over you. His lips moved from yours, dragging downward, slower along the edge of your jaw, then to the tender skin just below your ear, and further down to the place where your pulse fluttered.

"Jongseong," you whispered, your voice shaky, half-lost in the sensation, as his mouth lingered at your neck. You felt the sharp heat of his breath, then the sudden sting of teeth—not enough to break skin, just to claim it.

He groaned against your throat, the sound guttural, vibrating against your skin as his hips pressed down, grinding against yours with a rhythm that sent sparks through your nerves.

"Do parasites get this horny?" he murmured. You laughed, high and breathy, your hips tilting up to meet his. The movement drew a sharp moan from both of you as friction met heat, and the space between you disappeared again.

"Maybe it's just us," you said, fingers digging into his back. "Maybe we're the broken ones who feel too much."

His forehead pressed to yours, his lips hovering just above your mouth as he whispered, "Then I never want to be fixed."

He shifted his weight, sitting back just enough to reach for the hem of your shirt. You lifted your arms without hesitation, eager, your skin already humming with anticipation. The fabric peeled away easily, and the moment the cold air kissed your bare skin, a shiver ran through you.

Jongseong's gaze darkened.

"Shit..." he murmured under his breath, almost like he couldn't help it. Then his mouth was on yours again—hotter now, more desperate. His hands braced your hips as you reached between your bodies, finding the waistband of his pants and slipping your fingers underneath. You cupped him through the fabric, palm slow and the sound he made into your mouth was something deep. His hips jolted, twitching into your hand, hungry for more.

Your bra was the next to go, tossed carelessly across the room. The moment it was gone, his hands returned to your body. He paused, looking down at you. His fingers traced the lines of your waist, thumbs brushing the curve of your ribs, his breath shaking as though the sight of you unraveled something inside him.

He looked into your eyes—asking, without words.

And you answered. "Please... touch me more," you whispered, his mouth lowered, finding the curve of your breast, lips brushing the delicate skin before closing around your nipple. His tongue moved slow at first, teasing the areola in gentle circles, and then with more pressure—suckling, tasting, devouring.

Your back arched off the mattress, every nerve lit in a low, burning ache that made your breath catch in your throat. A breathy sigh slipped past your lips as you tangled your fingers in his hair, holding him there, needing more.

"God—Jongseong..." you moaned.

He responded with a groan of his own, vibrations rumbling against your skin as his hands slid down again. His mouth moved across your chest, his tongue leaving trails of heat as he worshipped every inch he could reach.

Beneath it all was something that had nothing to do with instinct. You weren't two creatures responding to any programming. You were two broken people learning how to feel again, how to love without shame—even if your bodies weren't built like they used to be.

"Remove it," you whispered, fingers curling in the fabric at his waist.

His mouth left your breast with a soft pop, his breath warm against your skin. He met your gaze and then rose onto his knees, hands moving quickly to strip the last layers away. Shirt, pants, boxers—gone in seconds, discarded to the shadows around the bed.

Your breath caught. Your eyes dropped, landing on his body, honed, powerful, beautiful in a way that bordered on unnatural. And then your gaze found his cock: thick, flushed, already aching for you. The sight sent heat spiraling through your core, a pulse deep between your thighs.

Your mouth watered.

You sat up, hands reaching for him, fingertips tentative at first, then bolder—wrapping around his length, feeling the weight of him, the twitch beneath your touch. Your movements were a little clumsy, a little hungry.

Your thumb grazed over the slick at the tip, smearing it down the shaft with a slow drag that made his breath hitch.

He was so hard. So warm. You could feel his pulse there, alive in your palm.

You looked up at him, your eyes searching his face. And God, how could someone look so divine?

The dim lights above caught on his sweat-damp hair, his chest rising and falling with every uneven breath. His lips were parted, his eyes hooded but fixed on you like he was watching a miracle unfold. Like you were the miracle.

You stare at him back, and it hits you. He wasn't human—not anymore. Because no human was this breathtaking. No man could look so effortlessly beautiful, even when his body was wrapped in scars, mutations, and power.

Ethereal, you thought.

You arched your back slightly as you leaned down, breath skimming along his length, and you kept your eyes locked on his. The second your tongue flicked out to lick the tip—slow, teasing—he let out a low, guttural sound that made your whole body throb with need.

His hands gripped the edge of the mattress, muscles tightening.

You ran your tongue along the underside of his cock, your lips ghosting over the sensitive skin, teasing him.  You loved the way he watched you.

"Fuck..." he whispered, voice hoarse.

You smiled against him, mouth opening wider as you took him in again—inch by inch, savoring the feel, the taste, the heat. Your fingers stroked what your lips couldn't reach, working in tandem as your pace gradually deepened, your body moving with quiet, desperate rhythm.

His hands found your face, thumbs gently cradling your cheeks as he looked down at you with that subtle, crooked smile—soft and filled with adoration. His gaze was half-lidded, dark with desire, but calm, too.

You hummed around his cock, the vibration making his stomach tense and his breath falter. You continued your rhythm, your head bobbing as your tongue worked him. Each motion earned a different sound from him, deeper now, breathless and ragged, his self-control rapidly fraying.

"Stop for a while," he breathed, voice tight, hand sliding to your jaw as he gently pulled you back.

You let him go, a thin string of saliva still connecting your lips to his tip, glistening between you. He didn't look away, his thumb brushed the slick trail from your mouth, and with a smirk, he pressed it between your lips.

You closed your mouth around it instinctively, eyes locked with his.

"Fuck," he whispered, as if the sight of you like that physically hurt. "You're so goddamn hot."

His hand slid from your cheek to your side. He guided you back down to the mattress, kissing you softly between each motion, your cheek, your shoulder, the center of your chest—as his fingers hooked the waistband of your pants and pulled them down, taking your underwear with them.

Cool air hit your thighs, and you shivered—but not from the temperature.

His breath hitched audibly as the scent of your arousal flooded the space between you. His cock twitched visibly, a strangled groan catching in his throat as his eyes dropped to the heat between your legs. And when he saw you—really saw you—his hands gripped your thighs, thumbs pressing into the soft flesh as he gently, but insistently, pushed them apart.

There you were. Glistening. Dripping. Your pussy visibly clenching, aching around nothing. Open to him.

"Haah..." he moaned. "You're perfect."

"Jongseong," you whined, hips tilting upward, searching for friction, for touch, for him. "Please... touch me already."

He leaned down, his mouth met your clit in one hot, wet stroke. You cried out at the contact, your back arching, fingers flying to his hair, gripping tight. He groaned against you, vibrating straight through your core.

His tongue moved with hunger, circling your clit, then flattening against it, then flicking with just enough pressure to make you gasp. His hands held your thighs open, possessive and steady, his mouth working you like he was starved for you.

Then he dipped lower.

His tongue slid down through your folds, gathering your slick, then pressing against your entrance—probing, pushing, entering.

You moaned, loud and breathless, as his tongue fucked into you, warm and firm and impossibly deep. It was intimate and wild, like he wasn't just tasting you—he was making out with your cunt. Every slurp echoed in your ears, every flick sent sparks crawling up your spine.

You could feel his tongue twisting inside you, exploring every inch, curling upward, coaxing you open in ways no one ever had. His mouth moved between your clit and your core, switching seamlessly, building pressure until you were panting, writhing beneath him.

"Are you gonna cum, my love?" Jongseong murmured, lifting his head just slightly to look at you.

My love.

The words hit deeper than his fingers ever could. Your chest fluttered, warmth blooming beneath your ribs. You couldn't answer with words—only a frantic nod, your fingers tightening in his hair, mussing it, holding him

His mouth returned to your cunt, tongue working your clit with firm, relentless pressure. He licked harder, faster, each stroke pushing you higher, your body already teetering on the edge.

You were twitching, panting, the heat spiraling out from your core in waves. You'd forgotten what it was like to feel so alive, so overwhelmed in the best possible way—like every nerve had come back to life.

You shattered with a cry, orgasm tearing through you like fire.

But Jongseong didn't stop.

Even as your thighs trembled, even as your body jolted with sensitivity, he kept his tongue swirling over your clit. And then, as if he knew just how to break you open all over again, he pushed two fingers into you, his middle and ring finger, long and strong and perfectly angled.

He curled them inside you, then began to thrust, steady and deep, knuckles brushing your entrance on every stroke.

"Ahhh! Jongseong!" You gasped, sitting up involuntarily, hips bucking against his face. Your body screamed with overstimulation, but it was too good to stop. Too much and not enough, all at once.

Back when you were still "normal," an orgasm like that would've left you limp and done. But now? Now you felt supercharged, every cell vibrating, your skin buzzing with more instead of fatigue.

You needed more and so did he.

The same fire burned beneath Jongseong's skin—evident in the way his hands gripped you tighter, in the flush blooming across his cheeks, in the heat radiating from his body like a furnace stoked too long.

He pulled himself up, chest heaving, and kissed you hard. Your tongues tangled instantly, messy and desperate, your panting breaths shared between kisses.

His fingers never stopped, still inside you, still thrusting, now with an animalistic rhythm that had you whining into his mouth. Each stroke sent a sharp jolt of pleasure through your core, your thighs twitching around his hips.

He swallowed every sound, every moan, and you could feel the satisfaction in the way he kissed you.

"More," you breathed against his lips.

His gaze darkened, his fingers thrusting deeper. "Then I'll give you everything."

He kissed you again, slower this time. You could feel his cock, hot and heavy, pressed against your thigh, throbbing with the need to be inside you.

He slowly slipped his fingers from you, your body twitching at the sudden emptiness, and shifted forward, positioning himself between your legs. His hand wrapped around his length, stroking himself once, then guiding the tip down between your folds. He didn't rush—he dragged the head of his cock through your slick, coating himself in the warmth of your arousal.

You whimpered, legs spreading wider, instinctively offering yourself to him, chest rising and falling in quick, shallow breaths.

"Put it in," you whispered, desperate, lifting your hips to meet him. "Please..."

But he held you still, fingers tight on your hips. "Not yet," he murmured, teasing your entrance with the head of his cock. "I want to feel you beg for it."

You moaned softly, hips twitching, the heat between your thighs unbearable now.

He finally pressed forward, just the tip breaching you and both of you cried out in unison. It wasn't just the physical sensation. It was the shock of connection.

"God—your pussy's sucking me in," Jongseong groaned, his head tilting back slightly, neck tense, jaw clenched. "Oh, fuck..."

When he pushed deeper, you choked on a moan, head dropping back into the pillow, hands gripping the sheets. Inch by inch, he filled you completely, the stretch perfect, overwhelming. You could feel every vein, every pulse, your body clenching desperately around him as he reached places you forgot were there—almost brushing your cervix, almost too deep, but just right.

Jongseong leaned into you, pressing his body against yours, skin to skin, chest to chest. His arms wrapped around you. He hugged you—his full weight over you. His face buried in your neck, breath warm against your pulse as he finally began to move.

Slow thrusts, measured and deep. Every time he pushed inside you, it felt like a wave crashing over your soul—bringing back color, sound, breath. You clung to him, your arms around his back, legs locking around his waist.

"I feel so alive," Jongseong whispered against your ear, lips brushing the sensitive skin as he kissed it.

The room was filled with heat. The sound of breath, of skin meeting skin echoed through the space only the two of you could hear. Outside, the world moved—wind howling through the tunnels, distant animal sounds sharp on the air, senses heightened by your altered bodies.

But none of it mattered.

The only scent in the air was arousal—yours and his. The only sounds were gasps, moans, curses whispered into sweat-slick skin.

"Nghh... Jongseong..." you cried, voice cracking as you pulled him closer, fingers digging into his back like you could drag him deeper inside you.

His rhythm shifted, harder now. More forceful. And then he angled his hips just right—and hit you there.

Your scream tore through the room as his cock slammed into your g-spot, stars bursting behind your eyes. You clenched around him, tight and involuntary, your body no longer yours—only his, only this.

"Fuck," he cursed, head dropping into your shoulder as your walls fluttered around him. "You feel like heaven."

"Harder... please," you begged, your voice a broken whisper. "Want it harder."

He pulled back just enough to look at you, his breath uneven, eyes blazing with raw intensity. "Yeah? This not enough for you?" he rasped.

You could only shake your head, tears brimming at the edges of your lashes from how good it felt. His hand reached up, fingers gently sweeping the damp strands of hair from your face. Then he kissed you again. Pouring every ounce of feeling into it, swallowing your moans as he slammed into you with brutal precision.

Each thrust shook your entire body. He moved faster now—faster than any human could. "Want more?" he growled against your lips. "You want to be filled, baby?"

You nodded desperately, too far gone to speak, your hips rising to meet every thrust, chasing the edge you could feel surging again. He groaned into your mouth, losing himself completely, fucking you.

When your orgasm hit, it tore through you, your whole body tensing, twitching, legs locking around his waist as you came hard, gasping his name.

And he felt the every pulsing wave, every clench of your slick, desperate walls around his cock—and he came with a broken sound, burying himself to the hilt as his release surged into you, thick and hot. You could feel him throbbing inside you, filling you deep, but he didn't stop.

Jongseong kept moving. His thrusts slowed but stayed deep, grinding into you. Your eyes rolled back, heat still pulsing violently through every inch of your body.

And for him—it was more than pleasure. He felt something inside himself realigning. Cells reorganizing, adapting again, responding not to survival... but to you. His body recognized yours, welcomed it.

The usual limits of human bodies didn't apply to either of you anymore. You should have been spent. Exhausted. But your broken refractory periods meant nothing now. The hunger didn't fade—it simply deepened.

He shifted without warning, flipping you effortlessly beneath him—then pulling you back, guiding you to straddle him instead. He collapsed onto his back, chest slick with sweat, arms open.

You took it. You climbed over him, breathless, body still buzzing, and sank down onto him in one smooth motion. A choked sound escaped both of you. You were so sensitive, your walls gripping him tight, but your need, your craving was louder.

You started bouncing, fast and messy, hips slapping against his thighs. "Fuck—yes, just like that," Jongseong growled, hands locking around your waist. His hips bucked up into you, matching your rhythm.

You braced your hands on his chest, fingers curling into his skin as your body began to spiral again. Your thighs trembled, knees shaking as your orgasm crept up again. You could barely breathe, barely think, only ride.

Jongseong shifted beneath you, planting his feet firmly into the mattress for leverage—and thrust up into you with such force you cried out, nearly collapsing over him. He fucked you through your orgasm, each thrust dragging the climax out longer, deeper, until your whole body convulsed, your cries echoing off the walls.

"Ahh—want more," you slurred, voice ragged, utterly cock-drunk.

Jongseong didn't speak. His breath came in hot, heavy bursts as he kept thrusting up into you. His hand reached up, slipping two fingers between your lips—quieting you. You moaned around them, muffled, your tongue swirling instinctively.

He watched you, eyes half-lidded, wild with lust. "You can't get enough, huh?"

Your moans vibrated around his fingers, still buried in your mouth, muffling your cries as your body kept bouncing on his cock, fast and needy.

You clenched around him again, and another guttural groan tore from his lips.

Jongseong slid his fingers from your mouth, glistening with your spit. He brought them to his lips and sucked them clean, eyes never leaving yours. The simple act made your pulse spike, your rhythm falter for a beat before you recovered.

Your hands slid back to brace against his knees, your back arching sharply. The change in angle made him slip deeper inside you, and you both gasped—his cock visibly outlined beneath your skin, filling you to the hilt. You saw the way his chest stuttered with each breath, eyes tracing every inch of your exposed body.

Then Jongseong laid back, propping himself up on his elbows to get a better view of you. His gaze locked with yours, you gasped softly when you notice the change in his appearance.

His pupils had gone completely black, pure darkness, blown wide.

Something else wrapped around your waist—slick, warm, textured like stretched skin, soft and strong at once. Your eyes widened as you looked down to see tendrils—tentacle-like extensions—curling from his body, wrapping around your midsection, your hips, your thighs.

"Jongseong..." you breathed.

He smirked and thrust into you hard enough to make your vision blur.

You cried out, body jolting, and then you felt another tendril—longer, thinner—slide between your legs. It pressed against your clit, stroking with an eerie, perfect pressure.

Your whole body keened.

"Oh—fuck!" you moaned, louder than before, your voice cracking as the sensation detonated through your core. It was too much. It was perfect.

Jongseong's other hand gripped your hips tighter, his fingers now stretching with inhuman dexterity, more of him wrapping around you, holding you. His cock kept thrusting up into you, the tendril at your clit stroking in sync, teasing the edge of your next orgasm.

Your breath hitched, your mind unraveling, the next orgasm building fast and hot, just out of reach.

"Need more?" Jongseong teased. More tendrils slithered around your body, responding to his command, flickering against your nipples—tight, wet licks of pressure that made you arch and whine, your chest thrusting forward instinctively. Your hands clawed at his shoulders, your head falling back, lips parted in wordless pleasure.

Your mind was far too hazy at this point, soaked in ecstasy and sensation.

Then you felt something soft and cool brushing the tight ring of your ass.

You flinched, hips jerking instinctively, but the tendrils around your thighs clamped tighter, anchoring you. Keeping you still. Keeping you open.

"Shh," Jongseong whispered against your neck, his voice patient, tender even as his body dominated yours completely.

The tendril at your ass was thinner than the rest, careful as it pressed inward—probing, stretching, sliding slowly. You gasped, muscles tightening, overwhelmed by the double penetration. His cock still thrust into your soaked cunt, fast and deep, while the tendril began to move inside you, teasing your second entrance.

You were so full, stuffed, surrounded, owned and every part of your body lit with fire.

"Why are you not talking?" Jongseong whispered, lifting his gaze to yours.

His eyes were fully dilated, pure black, wild and beautiful. You stared at him, mouth open, gasping—because God, he looked so hot. That face. That voice. That control.

The tendril inside your ass began to thicken, stretching you further, matching the rhythm of his cock as your body struggled to keep up. Your legs shook violently, your core fluttering as another orgasm surged too quickly to contain.

You were crying out, words lost to moans and breathless gasps. Jongseong thrust harder, faster; his hands, his cock, his tendrils working in unison. Every inch of you was stimulated. You were locked in his arms, caged in his grip, the hybrid strength in him overpowering but not brutal.

"I can feel you," he groaned. "All of you. You're squeezing me so tight, fuck—don't stop. Cum for me again."

And you did, you shattered, screaming his name, your entire body shaking as pleasure tore through you in electric waves. Your cunt clenched violently around his cock, your ass pulsing around the tendril still buried deep, and everything inside you collapsed into white heat.

Jongseong held you through it, driving into you with steady, desperate rhythm, chasing his own high, his body burning beneath yours, jaw clenched as he thrust one final time and groaned as he came deep inside you again.

Your head rested against his shoulder, your breath shaky in his ear. Slowly, the inhuman tendrils that had wrapped around you began to withdraw, pulling back into his arms, retreating beneath the skin.

His human hands replaced the tendrils, sliding around your back, palms soft as they cradled you. Then his lips pressed to your forehead, he brushed the hair from your face, fingers gliding through it carefully, over and over. The small, unconscious motion soothed something deep inside you.

The affection made you smile. You let your body melt into his, sinking deeper into the curve of his neck, where his scent surrounded you.

"Love you," you whispered in confession, your voice barely there . You felt the subtle shift in his chest, the rise of a soft laugh beneath your palm as he smiled against your hair. “I don’t want to regret any day I didn’t say that,” you continued. “Even if what I feel is just parasitological reaction, even if it’s some rewritten instinct pretending to be love—I don’t care. I love you.”

His hand pressed gently against the curve of your spine. "I love you," he whispered back, and the way he said it—so simply, made your heart throb.

You lifted your head slightly to look at him, eyes still half-lidded, dazed from pleasure and affection. You took in the mess of him: sweat-slick skin, tousled hair, the soft flush across his cheeks.

Beautiful, you thought again.

You smiled, lazy and warm. “More?”

Jongseong’s lips curved slowly into that familiar, crooked smirk.

The morning crept in quietly.

No alarms, no machines humming, no scans running downstairs in the lab. Just the soft amber light of dawn leaking through the half-closed curtains, casting warm streaks across the floor and the tangled mess of sheets.

You stirred first.

Jongseong’s arm was still wrapped around you, his chest rising and falling in the slow rhythm of sleep. His warmth radiated through the blankets, his breath steady against the back of your neck. You could feel his hand resting against your stomach.

You didn’t move right away.

You let yourself lie there, blinking slowly at the ceiling, muscles pleasantly sore, body still humming in a low, contented way. You could still feel the echo of last night in your bones, in your skin. The way he touched you. The way he looked at you.

You turned slowly in his arms to face him.

He was awake. His eyes were open, soft with sleep but focused entirely on you. The moment your gaze met his, his lips curved into a small smile, tired but intimate.

“Morning,” he said, his voice still rough from sleep.

“Hey,” you whispered. “How long were you watching me?”

“A while,” he admitted. “You twitch when you dream.”

You groaned, burying your face briefly in his chest. “Great. Bet I looked terrifying.”

He chuckled low in his throat, the sound vibrating through your cheek. “No. You looked... peaceful.”

You shifted, resting your chin on his chest to look at him properly. “You sleep?”

His hand brushed up your back in a lazy, soothing arc. “I do. When you’re here.”

That silenced you for a moment. “You always say things like that,” you murmured, “like you don’t expect this to last.”

Jongseong was quiet for a long breath. His fingers slid into your hair, combing it gently, thoughtfully. “I don’t take it for granted,” he said. “Not when everything about what we are could change tomorrow.”

You watched his face, trying to read between the words. “Do you think it will?”

He met your gaze. “Maybe. Our biology’s still in flux. Your last scan showed increased neural conductivity in your spinal column. Mine too. Whatever’s happening to us—it isn’t done yet.”

You nodded slowly, tracing the skin of his shoulder with your fingertip. “Do you think we’ll stop being us?”

He caught your hand and pressed it against his chest, over the steady beat of his heart. “I don’t know. But if I do change... I want to remember this. You. This moment.”

You leaned in, forehead resting against his. “Then let’s make more of them.”

His arm tightened around you, pulling you close until your nose brushed his. “Deal,” he whispered.

“Pathology of Parasites.”

You glanced up from your spot on the floor beside Jongseong’s lab table, brows lifted as you read the scribbled title on the datapad he'd just tossed aside.

“Wow,” you said, lips curving. “Very romantic.”

Jongseong looked up from his microscope, clearly unamused. “It was a working title.”

You held back a laugh as you pulled the datapad closer, scrolling through the contents—notes, schematics, overlapping neural maps. Some of it made sense, some of it looked like nonsense equations written in a fever dream. But it was his—every word a window into how his mind worked. Clinical. Focused. Relentless. And yet… there were margin notes scrawled in a different tone—curious, reflective.

One read: Subject B demonstrates emotional regulation post-mutation. Possibly adaptive. Possibly… intentional?

You knew Subject B was you.

“You study me a lot,” you said softly, setting the pad down beside you. 

Jongseong looked at you for a long moment, eyes steady, warm. “I don’t study you,” he corrected. “I try to understand you.”

You smiled faintly. “That’s somehow worse.”

He snorted. “Maybe. But you’re fascinating.”

You turned your head to rest it against the side of the table, eyes drifting upward to where he sat, perched in his rolling lab chair, hunched slightly over some slide under the scope.

“Do you ever miss it?” you asked. “Being a normal doctor?”

His jaw tensed, and he leaned back slowly, pulling away from the microscope. “Sometimes,” he admitted. “I miss helping people and knowing what I was fixing. Now... I’m just making guesses. Mapping new anatomy no one’s ever named. Studying nervous systems that grow new endings when I’m not looking. It’s not medicine anymore. It’s—”

“—exploration,” you finished.

He glanced at you again, his lips twitching slightly. “That’s one way to put it.”

You reached up and tugged at the end of his sleeve. “Come down here.”

“What, now?”

“Yes, now.”

He hesitated only a second before pushing the chair back and sliding to the floor beside you. You leaned against him immediately, head settling on his shoulder, your knees brushing his thigh.

“You ever think,” you murmured, “if we weren’t like this… if we were just two strangers in a city... we would’ve passed each other without a second glance?”

He was quiet for a moment. Then: “Maybe.”

You looked up at him. “Do you like that idea?”

He met your gaze, something soft flickering behind his eyes. “No.”

You tilted your head. “Why not?”

“Because if we were normal,” he said, “I wouldn’t have seen you split your face open like a flower. Or sprout wings. Or smile after turning into something terrifying. I wouldn’t have seen all the parts of you that are beautiful because they’re impossible.”

Your throat tightened. “You always say the nicest horrifying things.”

“I mean every one of them.”

You turned toward him fully now, your legs folding under you, fingers brushing against the back of his hand. “Do you think we’d still fall in love?” you asked.

He paused. “I don’t know. Maybe not. Maybe we’d never look close enough.”

You nodded slowly, fingers tracing invisible lines over the back of his hand. “Then I’m glad it happened like this.”

He turned his hand over, lacing his fingers through yours. “Even if it hurts?” he asked.

You looked up at him, smiling just a little. “Especially because it hurts.”

His thumb brushed over your knuckles, slow and grounding. “You know what I think?”

“Hm?”

“I think our pathology isn’t just parasitic. It’s poetic.”

You laughed under your breath. “Are you writing love poems in medical terms now?”

He smirked. “Only when I’m inspired.”

You leaned in and kissed him. The kind of kiss that wasn’t about heat or need—but about knowing and choosing.

When you pulled away, you stayed close, your forehead against his.

“I like this version of you,” you whispered. “The one who smiles when I mess with your research notes.”

He chuckled, his voice low in your ear. “And I like this version of you—the one who pretends not to be touched when I leave you notes shaped like protein chains.”

“You thought I didn’t notice?”

“I was hoping you did.”

You smiled. The datapad beside you still read Pathology of Parasites, but under it, someone had added in smaller handwriting—And the ones who survive them together.

The weather was quiet—eerily so.

Outside, the garden swayed gently under a pale morning sky. The another flowers you'd planted weeks ago had begun to bloom in earnest, soft bursts of color dancing in the breeze. Petals fluttered open toward the sun.

Inside, the air was still. Calm. The kind of stillness that didn't last.

Jongseong sat hunched at his lab desk, deep in a web of data. The neural scanner whirred quietly beside him, tracking changes in his cellular rhythms. Graphs rose and fell on the screen. Numbers blurred into pattern. His brow furrowed, fingers flying over the touchscreen, eyes sharp with focus.

The sound of wheels.

Faint at first. Too faint for most ears.

But not his. Jongseong body tensed instinctively.

Wheels. Two vehicles. Tires on gravel. He closed his eyes for a second, counting. One... two… four sets of footsteps. Three kilometers. Getting closer.

Jongseong rose from his seat with calculated calm, brushing a hand back through his hair, then pulled off his glasses and set them on the desk. His movements were controlled, but fast. He strode to the reinforced lab door, locking it with practiced ease before tugging a small, folded rug from under the emergency shelf. He draped it over the entry seam, concealing the frame as if it were just a storage hatch, then adjusted a nearby cabinet to further obscure it.

Once satisfied, he stepped back, exhaled sharply, and turned toward the stairs.

By the time he reached the living room, you were already there.

You stood at the edge of the hallway, barefoot on the wooden floor, arms wrapped around Jongjong. The little orange cat was tense in your grip, ears back, tail stiff, sensing the same wrongness that you did. Your eyes met Jongseong’s—and they were wide with fear.

“Who are they?” you whispered, your voice trembling. “I heard—cars, and footsteps. They're close.”

Your brow furrowed, panic rising, but Jongseong was already moving toward you. His expression was calm, but you could see the tightness in his jaw. He cupped your cheek with one hand, his thumb brushing gently beneath your eye. “Shhh… don’t be afraid,” he murmured, voice low and steady. “I don’t know who they are. But I’ll protect you.”

You swallowed hard, nodding once, clutching Jongjong closer to your chest.

The knock came sharply. Jongseong froze, he took a slow breath, then stepped forward, unlocking the front door with careful precision, standing just beyond the threshold was a man in a dark-gray uniform, flanked by two others. Another figure stood beside the nearest vehicle, partially obscured.

The man at the door wore a clean, crisp jacket with a silver emblem pinned near the collar. His expression was unreadable, polished. Government.

“Good morning, Dr. Park Jongseong,” the man said evenly. “I’m Lee Heeseung. Task Force Division Five. Anti-Parasite Intelligence Unit.”

Jongseong’s eyes flicked down briefly to the ID badge clipped at the man’s belt, then back up to his face. His features didn’t move.

“I wasn’t aware I was still listed under my former title,” he replied coolly.

Heeseung’s lips twitched into something close to a smirk. “Well, it’s been what… two years since you resigned after your incident. You can imagine it took some digging to find this place.”

He gestured loosely toward the landscape—gravel winding through old pine, the isolation of the hills, the unmarked road that led to nowhere. “Your house is… subtle,” he added. “Almost like you didn’t want to be found.”

Jongseong didn’t miss a beat. “I didn’t know that was illegal.”

“It’s not,” Heeseung replied, smile sharpening slightly. “Not yet. But you know how we work—we keep tabs on anyone with a profile like yours. Especially those who survived and then disappeared without a trace.”

“I resigned because I was hospitalized with thirty-five internal injuries,” Jongseong said evenly. “I’m sure you read the files, didn’t you? Spent a few late nights combing through the classified parts?”

Heeseung gave a quiet chuckle. “I skimmed the highlights. They don’t make many survive cases like yours, so you’re... of interest.” His eyes flicked past Jongseong’s shoulder—and landed on you.

You stood near the far end of the hallway, half-visible in the doorway, Jongjong cradled in your arms. You tried to stay still, neutral, but the weight of his gaze made your grip tighten. The kitten stirred with a faint mewl as you forced a smile that didn’t quite reach your eyes.

Heeseung’s head tilted slightly. “Girlfriend?”

There was something in his tone—probing, too casual to be genuine.

“Quite a familiar face,” he added. “I think we flagged her name once. Ran away from home, wasn’t it?”

You swallowed, every muscle in your body tensed beneath your skin.

Jongseong stepped forward, subtly blocking the doorway with his body to cover you. “We’re getting married,” he said flatly.

Heeseung’s brows lifted a fraction, but the smirk never left his face. “Well. Congratulations, then.” His tone made it sound like anything but a blessing.

Jongseong’s eyes narrowed. “What do you want?”

Heeseung’s smile faded slightly. Not gone but tempered. “There’s been parasite movement in this region,” he said. “We’ve been tracking electromagnetic fluctuations coming from your grid. Spike patterns. Irregular heat signatures. Even some satellite interference.”

He paused, studying Jongseong's face for a flicker of reaction that never came. “Nothing conclusive,” Heeseung added, “but... interesting. Enough to warrant a visit.”

Jongseong didn’t flinch. “Congratulations,” he said dryly. “You found a retired doctor with backup power.”

“Maybe.” Heeseung tilted his head slightly. “Or maybe we found a man who’s been hiding something more than outdated diagnostics.”

Jongseong stepped back half a pace—not in retreat, but to take a stronger stance. The door remained open behind him, but his presence filled the threshold like a barricade.

“If you had proof,” he said, voice low, “you wouldn’t be here asking questions.”

Heeseung’s smirk returned. “That’s true. For now.” His eyes flicked to the hallway again—just a second too long, settling on the space where you'd stood before he arrived. His gaze lingered, speculative.

“Thing is,” he continued, tone softening just enough to unsettle, “it’s only a matter of time. Sooner or later, all hosts lose containment. Doesn’t matter how strong they are. Or how careful.”

Jongseong’s jaw flexed. “And if they don’t?” he asked.

Heeseung’s eyes gleamed with the hint of something darker—curiosity, maybe. “Then they become something else. And that’s when they’re really interesting.”

Heeseung stepped back. His smile returned as he reached into his coat and pulled out a small card, placing it gently on the railing beside the door.

“If you ever decide you want to talk,” he said. “I’d be happy to listen.”

Jongseong didn’t respond. He didn’t take the card. Just watched.

Heeseung turned away, nodding once to the officers near the car. As he walked down the steps, his voice carried over his shoulder:

“Take care of your fiancée, Doctor."

The car doors shut with a dull clunk, and the engines rolled back to life.

Jongseong waited until the sound faded completely before closing the door. Not slamming it, just quiet.

The room was still again.

The echo of car engines faded into the distance, swallowed by the thick silence of the woods. But the unease didn’t leave with them. It settled in the corners of the room, in the shadows of the hallway, in the hush of the air itself.

Jongseong stood unmoving for a long moment, staring at the door. Then, slowly, he backed away, step by step, until he reached you.

His voice was low. Bitter. Tired.

“Government’s so fucking fake,” he whispered under his breath. He leaned forward and wrapped his arms around you, pulling you tightly against his chest.

Your body responded before your brain could catch up. Your arms encircled him, clutching Jongjong between you, the little cat still tense, mewing softly with each shift of breath.

You could feel Jongseong’s heart beating faster than usual. Not panic—but calculation. Instinct already grinding into motion.

Your own chest ached with the weight of it. “They’ll raid us,” you said, your voice strained. “You know that, right? It’s just a matter of time.”

“I know,” he murmured into your hair. 

He was already thinking, you could feel it in him—muscle memory kicking in, mind running down contingency plans, routes, caches, what to take, what to leave behind. But for one more second, he just held you there, breathing in the moment. Then he pulled back, hands firm but gentle on your shoulders.

“We need to move. Fast.”

You nodded, eyes wide but steady. “Where?”

“There’s a site. Old observatory, two hours east. No power grid, no satellite interference. It’s buried in forest. Abandoned for years.” He was already turning, heading toward the concealed panel in the hallway, the one that led down into the lab. “I used to store backup gear there. We can set up a new node. No one should find us.”

You followed him, Jongjong tucked against your chest, your footsteps light and quick on the floor. Down in the lab, the air was cooler—sterile, humming with faint electricity. But this time, the room didn’t feel like safety. It felt like a ticking clock.

Jongseong moved with swift. He was already pulling storage drives from the mainframe, detaching power cells, collecting physical records. “Grab your scans,” he said without looking. “The ones from last week. The DNA strand with the tertiary mutation—we can’t leave that behind.”

You rushed to the desk, locating the labeled folders, the encrypted drives. “Do we take the entire core?”

“No. Too heavy. Just the segments I isolated in Case File Delta-11. Everything else, we burn.”

You paused, breath caught. “Burn?”

He turned, locking eyes with you. “If they come here, they’re not just looking for us. They’re looking for proof. If they find it, we lose everything.”

You swallowed hard and nodded.

He returned to packing—the slow dismantling of a life that had once felt permanent. The garden. The house. The bed. The scent of tea in the morning and soft footsteps on wood. All of it, now just a risk.

“You’re doing okay?” he asked suddenly.

You looked at him, startled by the question. “What?”

He paused. “You’re quiet.”

“I’m trying not to fall apart,” you said honestly.

Jongseong walked to you, took your hand, laced his fingers through yours. “Then fall apart later. Right now, we survive.”

You blinked fast, refusing to cry, and nodded.

For the next hour, the house came alive with motion You cleared out the bedroom, pulling your few clothes into a duffel bag. Jongseong moved through the kitchen, the basement, the lab—grabbing rations, medical supplies, essential tech. Caches were unlocked from beneath floorboards. Batteries charged.

Jongjong mewed at your heels, sensitive to the sudden shift. You scooped him into a small reinforced carrier, latching the top shut gently as you whispered, “It’s okay, baby. We’re not leaving you.”

When everything was ready—what little they could carry—the rest was rigged.

Jongseong stood by the lab console, thumb hovering over a small interface.

“Are you sure?” you asked softly.

He looked around the room. The whiteboards, the shelves, the soft glow of monitors that had flickered through endless nights of quiet obsession. “I loved this place,” he said. “But it was never meant to last.”

Then he pressed his thumb to the screen. The countdown began: 120 seconds.

He turned to you.

“Let’s go.”

The two of you moved quickly through the trees, boots crunching against the uneven trail that led away from the house. The duffel bags strapped over your shoulders weighed heavy, and Jongjong’s carrier bumped gently against your side as you kept pace with Jongseong. Every breath burned in your chest, lungs tight from urgency, but you didn’t slow.

The road wasn’t far. Behind you, the first hint of black smoke coiled upward into the sky—thin at first, then thicker, darker, alive with the scent of something ending. Chemicals. Plastic. Burnt paper. Memories.

You glanced back once, just once, and saw the roof of the house begin to buckle in the distance, flames licking hungrily through the glass of the greenhouse.

The safehouse was gone.

You turned your face forward again, biting down hard on the grief rising in your throat.

Then, just as you and Jongseong stepped out from the treeline onto the narrow, cracked road, you heard it—engines. Multiple.

Too close.

Jongseong’s hand shot out instinctively, halting you in your tracks as headlights cut across the road ahead. Then another flash of light from behind. The hum of electric motors shifted into full roar as a wall of vehicles emerged from the forest—sleek, matte black, no visible insignia.

One car. Then two. Then four. They encircled you with military precision.

“Fuck,” Jongseong breathed.

Your heart kicked into a sprint.

The tires screeched as the cars completed the circle, trapping you both in the center. Doors slammed. Boots hit gravel. From the trees, two more massive transport trucks rumbled into view—large, reinforced, bearing symbols you didn’t recognize.

Your pulse rang in your ears. Jongjong whimpered inside his carrier.

Around you, agents moved into formation—helmets, rifles, armor too advanced for local law enforcement. These weren’t just military. This was containment.

You felt Jongseong’s hand slip into yours, grounding. His grip was steady, but the tension radiating from him was unmistakable.

They’d come fast. Too fast. Someone had been watching long before Heeseung ever stepped onto the porch. The visit had been a test—a warning disguised as politeness. And now, the real answer had arrived.

Jongseong stood still beside you, his body calm but coiled like a spring. Eyes scanning every angle—counting rifles, reading stance, calculating distance.

“We don’t run,” he said quietly, his voice low and measured.

You nodded, barely. Your mouth had gone dry. Every muscle in your body was buzzing with restrained panic, but his steadiness held you together. Barely.

Then the voice came, amplified by a mounted speaker from one of the armored vehicles ahead.

“Park Jongseong. Parasite host that evolved with retained intelligence. Subject Code 1072. You are surrounded. Surrender peacefully.”

Parasite. Host.

You felt something clench in your chest. They thought Jongseong was gone. That he was nothing but a skin-walker—a parasite wearing his face. They thought he had taken Jongseong’s memories. Not kept them.

And if that’s what they thought of him… what did they think you were? You were both still yourselves. Still human in the ways that mattered. Conscious. Feeling. Choosing. How could they not see that?

It was easier to reduce you to subjects—to codes and categories. It was easier to eliminate anomalies than to understand them.

You flinched as the quiet clicks of safety switches echoed around you. One by one. Like a metronome of dread. The hiss of containment coils charging up, the faint hum of EMP disruptors warming beneath the truck chassis. Cold, impersonal tools built to restrain monsters.

This is it. This is how it ends.

You choked back a cry, your vision blurring with panic, heart jackhammering in your chest.

A hand, warm and steady, wrapped around yours.  You looked up instinctively, drawn by that calm pull, and saw Jongseong’s face turned toward you. No fear in his expression.

Only you.

His thumb brushed gently across your skin—once, twice, the motion grounding. His eyes held yours, soft and unwavering, and in them was a message louder than the voice still barking orders from the trucks:

We’ll be alright.

No matter what happened next. Whether they fought, ran, or burned it all down—he would not leave you. Not now. Not after everything.

You swallowed hard, pressing your forehead briefly to his shoulder.

“Let me be perfectly clear,” he said. “I’m not a host. I’m not a parasite."

But they weren’t listening. Before the next breath, the soldiers moved.

Shadows broke from the perimeter—six of them, black-clad, rifles raised, moving with ruthless efficiency. You barely had time to react before they were on you, splitting you apart.

“Jongseong!” you screamed, voice raw, panic lacing. You twisted violently in their grip, but they were trained for this. One of them was already behind you, and then—Cold metal—pressed hard against the back of your skull. 

“Do not touch her!” Jongseong roared, voice losing all calm. “I came out here on my own. I’m trying to handle this peacefully—hear me out first!”

“What a nerve for a parasite.”

Heeseung stepped forward from the rear of one of the vehicles, casual as ever, a tablet under one arm and a sleek black coat whipping slightly in the breeze. His expression was between amused and disappointed.

“You know what fascinates me about your kind?” he asked. “You think memory makes you human. That because you remember who you were, that gives you the right to pretend you still are.”

Heeseung smiled thinly, but his eyes were sharp and gleaming. “You’re not a miracle, Park Jongseong. You’re a malfunction. A parasite too stubborn to wipe clean. An error in the code.”

“You’re wrong,” Jongseong said, voice low and shaking with barely-contained rage. “I’m not pretending. I am still me.”

“Oh?” Heeseung lifted an eyebrow, then glanced at you, pinned and trembling. “Then why does your biology say otherwise?”

“This,” Heeseung continued, “is not human. And it never will be again.”

He stepped closer to you now, far too close, gaze crawling over you. His hand reached for your face.

You flinched and Jongseong snapped. “Don’t touch her!” he bellowed. His body tensed, pulsing with barely contained energy, the hybrid signature humming just beneath his skin.

But the soldiers were faster this time. Before he could fully shift, they surged forward, slamming him to the ground with blunt, brutal force. A shriek tore from your throat as metal restraints clamped around his wrists, locking into his nerves with a cruel hiss. Another device—a containment collar—was pressed to the base of his neck and activated with a low whine. It snapped shut, injecting something through the skin.

"No!" you screamed, trying to lunge toward him, but two soldiers seized you by the arms and yanked you back. From the corner of your eye, you saw them dragging Jongseong toward one of the trucks. His head lolled forward, jaw clenched, blood trickling from the corner of his mouth. But his eyes—his eyes—were still locked on you.

“My cat,” you whispered hoarsely, panic rising in your throat as you clutched the carrier tighter to your chest. The soldiers didn’t stop—they reached for it too.

"Please don’t hurt Jongjong,” you begged, voice cracking as the straps were torn from your hands, the warm weight of the carrier suddenly gone. “Please.”

The truck doors slammed behind Jongseong. Heeseung approached you, boots slow on the gravel, his expression unreadable. You expected amusement, or cold detachment. Instead, he looked… fascinated.

He stopped just in front of you, gaze flicking over your face, then lower, he reached out and plucked a strand of your hair.

You jerked back, but he already had it between his gloved fingers, holding it against the light.

It twitched. A subtle motion, almost imperceptible. The strand pulsed—flexed—like something living beneath the keratin. A ripple of parasite-altered structure, responsive to stress. Adaptable.

Just like Jongseong’s. 

“Fascinating,” he murmured, more to himself than to you. You stood rigid, breath shallow, refusing to give him the satisfaction of fear.

He didn’t need you to speak. He already knew. You moved differently too.

Not like the ones they captured in the early waves—parasites that tore through their hosts in hours, leaving nothing behind but mindless hunger. Those were feral. Primitive. No self-awareness, no identity. They moved in twisted packs, bonded by instinct and survival programming alone.

You showed restraint. Expression. Emotion. A parasite that retained host memories wasn’t unheard of, but this level of cognitive mimicry? This illusion of selfhood? It was advanced. Dangerous.

Heeseung’s gaze flicked toward the truck where Jongseong was being restrained, injected, monitored. Still conscious, still resisting. Still looking at you.

The way you’d screamed for him. The way he’d fought back. The way your bodies moved in sync when threatened, like one half of the same adaptive system.

Heeseung’s brow furrowed faintly as his mind worked. Two parasites. Two separate hosts. And yet—shared behavior, matched speech patterns, mirrored stress responses.

Coordination. There was no record of parasite hosts operating this way.

No. These two were different.

They operated like a bonded system—distinct, but synchronized. Reflexively connected. Conscious units that didn't just act... they adapted. They evolved in tandem.

Like they remembered how to be human.

Heeseung turned from you without another word and walked briskly toward the rear vehicle.

The heavy doors of the transport truck slammed shut behind him with a hollow thud, sealing away the forest light. Inside, the air was sterile and close—metal floors, reinforced paneling, containment restraints bolted to the walls.

Jongseong sat chained at the wrists and ankles to a steel platform welded to the floor. A neural-suppression collar wrapped around the base of his neck, blinking with slow, pulsing red light—designed to keep his nervous system dormant. His breathing was shallow, restrained by the collar’s influence, but his eyes…

His eyes were alert. Fixed on a spot on the floor in front of him, still burning with thought.

The soldier at the rear finished checking the restraints, nodded once to Heeseung, then stepped out, leaving the two of them alone as the engine rumbled to life.

The truck began to move.

Heeseung sat across from him, there was a moment of silence before Jongseong spoke.

“Where did you put her cat?”

He didn’t look up—just stared at the floor, wrists loose in the restraints, posture deceptively relaxed.

Heeseung blinked, caught off-guard by the question. Not a threat. Not a plea. Just calm, focused concern. That tone again. Human, not host mimicry.

“She was worried,” Jongseong continued. “Even when they put a gun to her head. She didn’t cry for herself.”

“Your first question,” he said at last, “after all this—after being tranquilized, collared, contained—is about a cat?”

Jongseong’s jaw shifted slightly. “He’s all she has left."

Heeseung leaned back in his seat, watching him, trying to see where the parasite ended and the man began. “You say that like you care.”

“I do,” Jongseong said simply.

“You’re not supposed to,” Heeseung said flatly. “Parasites don’t care. They consume. They replicate. They preserve function only long enough to blend in and feed. Emotions aren’t in the architecture.”

Jongseong finally lifted his eyes. And when he did, the calm in them unnerved even Heeseung. “Maybe your data’s outdated.”

Heeseung didn’t answer right away.

The collar blinked again—another suppression pulse. Jongseong winced slightly, just a flicker. But the control was slipping.

“Why her?” Heeseung asked, narrowing his eyes. “Why protect her? Why bond?”

Jongseong tilted his head. “You think that’s the parasite, don’t you? A mimicry of love?”

“Isn’t it?”

“No,” he replied quietly. “It’s something stronger than that. Something your experiments can’t replicate.”

Heeseung watched him for a moment longer, then pulled a tablet from his coat. He tapped the screen once, bringing up a live feed.

On it—your containment cell.

You were seated on a cold bench, hands cuffed, staring at the wall with red-rimmed eyes. Jongjong’s carrier sat in the far corner, intact. The kitten was curled up inside, asleep, breathing shallow but steady.

“She’s safe. For now,” Heeseung said. “As long as you cooperate.”

Jongseong didn’t speak. He didn’t flinch. Didn’t blink. Just kept his eyes on the screen showing your containment room. The only motion came from his fingers—subtle, rhythmic tension in the knuckles as they flexed against the cuffs around his wrists.

The low rumble of the truck filled the silence between them as the vehicle rolled down the cracked road. The steel walls vibrated faintly with every turn, every bump. The hum of the suppression collar echoed with each pulse, a soft, almost inaudible thrum designed to keep the nervous system in check.

Heeseung sat opposite him, tablet resting on one knee, but he wasn’t looking at the screen anymore.

He was watching him. Heeseung had spent years studying parasite behavior. He’d seen the aftermath of outbreaks, the scorched ruins of cities where hosts turned feral. He’d dissected bodies whose minds had been consumed, hijacked by instinct. He knew how the infection behaved. The timeline. The neurological decay.

Heeseung leaned forward slightly, watching every twitch of the man’s jaw, every micro-movement in the corners of his eyes. There was no vacant, drone-like stillness. No flickering dissonance between body and mind. Jongseong moved with control. With memory.

“Two years,” Heeseung said quietly. “Since your incident.”

Still, no reply.

“No symptoms of degeneration. No neural collapse. No regression to instinctive behavior. Not even a shift unless provoked.”

Heeseung’s eyes narrowed slightly. “Parasites don’t do that.”

“You should’ve lost cognitive function by now,” Heeseung muttered, as if to himself. “Or at least shown instability. But you’re not twitching, not fragmenting. You’re still here.”

Jongseong didn’t answer.

Heeseung studied him harder now. “You responded to pain. But you didn’t lash out. You defended her first. Like you weren’t the one being contained.”

He stood slowly, pacing a step across the cramped transport cabin. “You aren’t fighting for survival like the others. You’re fighting for her. And the cat.” He said the last part with disbelief.

“And even now—with everything shut down inside you—you’re not asking how to escape.” He tapped a knuckle lightly against the wall. “You’re asking about a cat.”

Heeseung exhaled slowly, almost reluctantly, he muttered the thought that had been coiling in the back of his mind since he first saw the two of you together:

“…What if we didn’t catch a parasite?”

Across from him, Jongseong finally lifted his eyes. “You didn’t,” Jongseong said quietly.

His voice was calm. Too calm. It made Heeseung’s spine tighten.

“You didn’t catch a parasite,” he repeated. “You caught me.”

Heeseung turned toward him, narrowing his eyes, the flicker of doubt still not strong enough to override years of indoctrinated procedure. “So what are you then? The host pretending to be alive? Or the thing that took his name?”

“I’m not pretending,” Jongseong said, sitting straighter despite the restraints. “I never stopped being me.”

Heeseung folded his arms, cautious. “Parasites can adapt to memory. Form neural imprints. Replay emotions. It doesn’t mean they feel them.”

“I remember my mother’s voice,” Jongseong said. “The smell of mint in my lab. The first time I stitched a wound clean."

He leaned forward just slightly, eyes locked with Heeseung’s. “Tell me. What kind of parasite chooses restraint?”

Heeseung didn’t answer.

“I should have attacked when you put the collar on,” Jongseong continued. “When you touched her. When you threatened a cat. But I didn’t. Because I still have choice. I still have will. And if I wasn’t me... you’d all be dead.”

Heeseung’s jaw tightened. “That’s not proof of humanity. It’s control.”

“It’s both,” Jongseong said. “That’s what you can’t see. You’ve been fighting a war against an infection—but you never stopped to consider that maybe, some of us… integrated.”

He let the word hang.

“Not overwritten. Not consumed. Not mindless.”

“Integrated,” Heeseung repeated slowly, voice skeptical. “As in… coexistence?”

Jongseong nodded once. “Symbiosis. On a level your science hasn’t reached yet. Our cells merged. Our minds remained intact. Not corrupted."

The idea clawed at the edge of his discipline. It wasn’t just unorthodox—it was heretical in the field of parasite containment.

“This isn’t a theory we can test,” Heeseung muttered, as much to himself as to Jongseong. “There’s no model for what you’re describing. No neural map that explains how host and parasite can both retain identity—”

“Because you’ve never looked,” Jongseong cut in. “You see symptoms. You don’t see survival. You isolate, contain, and kill before you understand.”

Heeseung stopped, and look at him again. “Why her?” he asked again, softer this time. “Why protect her like that?”

Jongseong’s gaze didn’t waver. “Because I love her. Not because the parasite remembers it. Because I do."

Heeseung was silent, the silence between them thickened.

“If you're going to cut us open, then leave her out of it. I’ve already run my bloodwork. The cells in our systems—they’re nearly identical. If you need a subject, take me.”

Heeseung narrowed his eyes. “You’re admitting you’re infected.”

“I’m saying I know more about what’s happening inside me than you ever will,” Jongseong said. “I’ve seen the mutation pathways. I’ve watched how the parasite interacts with host DNA. It doesn’t consume. Not in our case. It synchronizes. Rewrites with us, not over us.”

“You expect me to believe this is some kind of... biological partnership?”

“I don’t care if you believe it,” Jongseong said coolly. “I care if you let her live.”

Heeseung stood motionless, his fingers tightening slightly over the edge of his tablet. His mind clearly spinning, trying to stitch logic back together with a theory that had no precedent, no documented case, no rules.

Then a sudden bang was heard at the front of the transport.

The front of the transport jolted sideways, metal groaning as something massive rammed into the vehicle’s outer shell. Jongseong’s head snapped up, his body jerking violently against the restraints. The suppression collar flared with a pulse of light as it tried to regulate the surge in his nervous system.

But instinct was already rising. From deep in his bones, something ancient and sharpened stirred.

Warning sirens shrieked from the cockpit, pulsing red light flooding the interior. A violent, inhuman screech tore through the walls of the transport, piercing and layered with a sound that no natural throat could make.

Heeseung spun toward the back, eyes wide, gun already in hand as static exploded over the comms.

“—under attack—Sector Four breached—multiple signatures—non-registered forms—”

Then: silence. The comm cut out with a sharp burst of static.

Another impact—closer now.

The left panel of the truck ripped open, jagged claws punching through the hull. The interior sparked, wires torn from the wall. Screams erupted outside, brief, panicked, human—and were immediately silenced.

Gunfire flared, distant and fast. Then stopped. The truck screeched to a halt. Everything inside shuddered.

Jongseong’s breathing slowed. His pupils dilated. A sharp ringing started in his ear, piercing and constant. A signal. An echo. He knew that sound. The ferals were here.

Heeseung backed toward the wall, cursing under his breath, eyes darting toward the ruptured seams of the truck. “Shit—ferals. We’re not the only ones who tracked your signal.”

The vehicle hissed, locking down in emergency containment mode, blast doors grinding into place—but it wouldn’t hold.

It never held against evolved ferals.

A voice crackled in over the emergency channel, panicked and distorted.

“They’re cutting through the outer convoy—unit integrity compromised—blades—gods, their heads—!”

Heeseung turned toward the hatch with frantic precision, slamming a hand against the biometric reader. It blinked red.

Denied. Lockdown protocol in effect.

He snarled and spun toward one of the soldiers just as they dropped in from the front cabin, blood on their chest armor.

“What the hell are they doing here?!” Heeseung barked, breath ragged.

The soldier stumbled forward, panting. “We were being tracked. They're grouped, coordinated. They sensed the suppression signals. We were too focused on the subject—on capturing him—we didn’t see them grouping up!”

Heeseung’s face twisted, horror blooming beneath the sweat on his brow. He hit the external door override and shoved it open.

The wind roared in—along with the sharp scent of blood and ozone. He stepped out onto the highway and stopped cold.

The road was carnage.

Vehicles overturned. Trucks in flames. Smoke coiling into the sky. The asphalt was smeared with streaks of red. Civilian cars had been caught in the chaos, crumpled in the crash zone, some still running. The sound of alarms blared faintly beneath the screams.

And all around them—parasites. Dozens of them.

Moving in brutal synchronicity. Their heads had split open, revealing rows of blade-like bone and twitching sensory tissue, extending into curved, serrated weapons. Limbs bent at impossible angles. Some crawled low, others leapt over crushed vehicles.

One slammed a containment soldier into a guardrail, slicing through armor like foil. Another dragged someone beneath a flipped transport, the sound that followed barely human.

“Fuck!” Heeseung shouted. “We’re on a highway! Civilians are here!”

He watched as one parasite tore through a family vehicle. And suddenly, Heeseung understood the truth he’d ignored for too long:

While the government hunted for anomalies, the real parasites were already evolving—together.

 "Jongseong!" Your voice cut through the gunfire, the sirens, the screeching metal—and Jongseong’s body reacted instantly.

His head snapped up, muscles tensing, eyes blown wide with instinct. The suppression collar hissed against his neck, trying to contain the surge of parasitic activity pulsing beneath his skin, but it was failing—overloaded by the ambient energy from the ferals outside. He pulled against the restraints, harder than before, the reinforced cuffs groaning.

Heeseung spun, eyes wide, curse caught in his throat as he raised his pistol again and fired into a cluster of parasites tearing through the defensive line.

Shots rang out, shells clinking against the scorched metal floor. Smoke billowed from one of the downed trucks. The soldiers had formed a defensive circle around the transport, rifles raised, trying desperately to hold position. Their formation was tight focused on protecting the anomaly inside.

But they didn’t see you. Your form moved like a blur—inhumanly fast—leaping across the crushed hood of a nearby vehicle. Metal dented under your weight as you sprang upward, hair whipped by the wind, eyes burning.

“How the hell—” one soldier stammered. “How did she escape containment?”

Another parasite lunged toward you, its jaw split wide in three directions, blade-arms drawn back to strike—but you twisted mid-air, your arm morphing as it flared into a winged shield, catching the creature mid-swipe and launching it backward with a bone-cracking crash.

You landed hard on the ground, crouched and panting, blood spattered on your cheek but your eyes were locked forward.

“Get away from him!” you screamed, your voice tore through the cacophony.

More soldiers had arrived—reinforcements spilling onto the blood-slick highway, shouting over their comms, rifles raised, movements tight and confused. But they couldn’t keep formation. They couldn’t keep up.

The parasites were everywhere crawling over the wreckage, tearing through armor. Heads split in jagged, serrated formations. Limbs bent backward, adapted for slicing, climbing, killing.

Heeseung stood in the center, spinning in place, trying to process it all.

Too fast. Too many. His team was trained for containment, not war.

“Sector is compromised—” a soldier barked through the radio before his voice was swallowed in static and a wet, bone-snapping crunch nearby.

All around him, his men were falling. One circle formation collapsed entirely, parasites tearing through the armored bodies within seconds. Another squad tried to regroup behind the burning transport, but were picked off before they even knelt.

Heeseung turned, frantic, searching for something to ground the moment. His eyes locked on you again.

You were in the open now—half-covered in smoke and ash, crouched behind a twisted heap of steel. Your breath was ragged, chest heaving, your once-formed wing-arm flickering with strain. Bone pushed through skin, not cleanly. It was raw. Exhausted. Overused.

You lifted your hand again but it refused to hold shape. Too many eyes.

The soldiers had seen you, so had the parasites.

And now everyone was targeting you. They didn’t care if you were like them or not—they only knew you weren’t theirs.

Gunfire cracked again, a warning shot grazing the steel beside your head. You ducked, eyes wide, hand burning as it twisted, half-shifting into something between claw and shield.

“Jongseong!” you cried out, breath shattering on his name. You didn’t know if he could hear you, but he felt you.

Body twisting against the chains as the parasite beneath his skin surged upward. The steel groaned. Jongseong’s wrists ripped free from the restraints in a burst of heat and sound. Sparks rained down as his hands—half-shifted now, gleaming with dark, fluid armor—tore the collar from his neck with a violent crack, tossing it against the wall where it exploded in a flash of white.

One leap carried him from the open truck, landing on shattered pavement just a few meters from you. Smoke curled from his shoulders. The wreckage of the convoy burned behind him. But he wasn’t looking at the fire.

He was looking at you.

“Stay back!” one of the soldiers shouted, stepping into his path.

Another raised a weapon and then they shot him.

The crack of the rifle echoed.

A high-velocity round tore into Jongseong’s back, slamming into the base of his spine, his arms dropped slightly.

And that’s when something inside you snapped.

The sound of the bullet, the sight of him being hit—again—sent a wave through your chest that wasn’t fear.

"No!" Something inside you responded. Your ears rang—not from the gunshot, but from a deeper frequency. Like pressure under water, like something old and waiting inside your blood suddenly woke up.

Heeseung saw the shift too late.

“No! Hold your fire!” he shouted, voice cracking as he pushed through the chaos, waving his arm wildly at the squad still taking aim. “Cease fire—stand down!”

Jongseong’s body hit the pavement hard, a low, guttural groan tearing from his throat. The bullet had struck at the base of his spine—the most sensitive part of his body, where parasite and host tissue merged deepest. His limbs trembled, nerves crackling like snapped wires. The world around him blurred.

Sound fractured. Vision swam. But even through the fog, his body moved.

He forced one arm forward, dragging himself across the cracked asphalt, blood trailing behind him. Grit tore into his palms. Every movement lit his back. He had to reach you.

His breath hitched, when he looked up and saw you.

You were standing amidst the ruin, body trembling, chest rising, your head is split. Down the center, your skull had begun to peel open, petals of bone and skin folding back in a horrifying symmetry.

Inside, the interior of your skull pulsed with living tissue—luminous, intricate, organic architecture sculpted into motion. The folds moved, shimmering with pale bioluminescence beneath layers of exposed membrane. Thorned tendrils extended into the air, twitching like antennae, reaching in all directions—reading everything.

You weren’t looking at anyone. You were looking at everything.

And anything that moved was a target.

Jongseong watched, breath stuttering in his throat as he pushed himself to his feet, limping, wounded, bleeding, but still moving toward you.

“No…” he whispered, his voice frayed with pain. “Please—look at me.”

But your head remained split open, the sensory limbs on full alert, searching, flinching, vibrating with threat-perception. You were caught in something deeper than instinct. Something merged. Not fully parasite. Not fully human.

Hybrid rage.

He saw your hands flex—one already reshaped into a half-scythe, twitching.

His steps faltered. You didn’t recognize movement anymore. Only motion. Only danger.

And that’s when a memory crashed through him.

“If I stop choosing?” you asked him, voice fragile, small in the silence of your shared bed. “If I lose myself?”

He cupped your face and smiled faintly, "remember what I said when we first met?"

"I’ll stop you,” he said. 

Jongseong staggered closer, lifting a hand.

“Come back to me,” he whispered, blood dripping from his fingers. “It’s me, remember? You asked me to stop you. But I know you’re still in there.”

Your tendrils twitched, one sweeping dangerously near his face. Another moved to your back—coiling instinctively, ready to strike anything that came close.

He didn’t move faster. He moved slower. One step at a time. No aggression. No sudden gestures. Just presence.

Your exposed mind pulsed again, recognition flickering across the movement sensors.

The rage inside you paused.

Jongseong was right there, wounded and reaching. His hand stretched toward you, fingers trembling, eyes full of you.

You saw him. He saw you.

For a moment, the chaos faded beneath the ringing in your head. The rage had cracked open, flared, and then wavered. The kill-reflex that had overtaken you flickered like a faulty circuit. Jongseong was there—his body broken, bleeding, limping toward you, arms out like he wasn’t afraid. And you weren’t afraid either.

He was calling you back. You could feel it in the weight of his gaze, in the tremble of his voice, in the way he said your name like it still belonged to a person, not a monster.

But the world never gave you time to breathe.

“Target in range!” came the voice, sharp and too close.

A soldier burst through the smoke to the left of the wreckage, rifle raised, armor streaked with ash. He’d broken rank. His orders were panic now, and his eyes were locked not on you—but on Jongseong.

He didn’t see the moment between you.

He saw a parasite protecting another parasite. He pulled the trigger.

And the world snapped back into motion.

Your body reacted faster than thought. Your limbs twisted with violent precision, burning pain ripping through your shoulders as tendrils re-flared wide. The trajectory of the bullet was instant, and so was your movement. You lunged—not toward the soldier, but toward Jongseong. 

The shot rang out.

It hit you in the side of the head. The force snapped your body mid-leap, the angle of your descent faltering as the impact twisted your momentum. You crumpled in the air, before collapsing into Jongseong’s arms.

He didn’t process it at first. His mind refused to.

He had just seen your face—your eyes, focused and full of something fierce. You’d moved to shield him. You had chosen. And now your weight was in his arms, limp, warm, and wrong.

Jongseong’s eyes widened, his pupils blown wide as your body hit him. You slid into his chest, your limbs folding over him.

“No—” The word broke from him. Your blood was already pooling in his lap, hot and thick, soaking through the front of his shirt.

Your head lolled against his shoulder, and for one breathless, agonizing moment, he thought it was over. That whatever part of you had held on through mutation and fear had finally let go.

Then, you moved.

Your fingers twitched against his chest, searching weakly, as though your body still knew him. As though your nerves had memorized where he was. His hand flew to your cheek, cradling your face, feeling the fresh, searing heat of the wound just above your brow, where the bullet had grazed—not pierced—just grazed, carving a shallow line along the temple instead of burrowing deep.

It hadn’t gone through.

It hadn’t gone through.

“Hey—hey,” Jongseong whispered, his voice trembling as his thumb brushed away the blood streaking down the side of your face. “Stay with me. Look at me. Come on, open your eyes.”

You stirred faintly in his arms, eyes fluttering open halfway. Blurry. Unfocused. One pupil dilated, the other slow to respond. Your breathing came shallow, uneven. But you were still there.

“I’m sorry,” you whispered, slurred. “You were in the way.”

Tears welled in Jongseong’s eyes, stinging hot. “You think I care about that?” he said, a bitter laugh breaking through his grief. “You shouldn’t be protecting me. I’m supposed to protect you. That was the deal. That was the whole damn deal.”

Your mouth twitched into the ghost of a smile. “We keep switching places.”

He let out a breath—part sob, part laugh—and pulled you tighter against him, pressing his forehead to yours. “I’ve got you,” he murmured. “You’re gonna be okay. We’re gonna get out of this. Just don’t close your eyes, okay?”

Around you, the world was still burning.

The smoke curled through the air, lit red by fire and violence. Parasites clashed with soldiers. Screams rose and fell. Metal groaned as the transport vehicles burned. But inside this circle, there was only the two of you.

Jongseong cradled your body close, arms trembling, holding you. You were breathing but just barely, and each breath was a battle. Your eyes were open, unfocused, but searching only for him.

“I said hold your fucking gun!” Heeseung’s voice tore through the smoke, sharp and furious. He stormed forward, boots crunching glass and debris.

But halfway there, he froze. A small, unmistakable sound pierced the tension.

"Meow."

Heeseung blinked, momentarily disarmed.

Out from behind a crushed tire, padding softly on tiny feet, came the orange kitten. Its fur was matted with soot, but it was unharmed. It limped slightly, dazed but determined, weaving its way across the field of bodies and broken machines. It meowed again, louder this time, heading straight toward the two figures curled together on the ground.

Heeseung watched, stunned.

The kitten crawled into the small space between your arms and Jongseong’s chest, nudging at your hand until your fingers curled faintly around its fur. A soft sound escaped your lips—almost a sob. Jongseong let out a broken breath, head bowed low, tears trailing silently down his blood-streaked face.

Heeseung had seen hundreds of parasite cases. Dissections. Failures. Living corpses. He’d seen what it looked like when something wore a human face like a mask.

They weren’t mimicking emotion.

They were feeling it.

And suddenly, something cracked in him. Maybe it was the way Jongseong hadn’t fought back. Maybe it was the way you had shielded him without hesitation. Or maybe it was the cat—meowing stubbornly like it belonged in this hell, like it belonged to someone who mattered.

Heeseung turned away. “Take them to the hospital,” he said gruffly. "Now.”

The remaining soldiers hesitated. He turned his head slightly, eyes hard. “They are just normal beings. You hear me?”

The sun was bright—too bright, almost unreal after everything. You lay on your back in the grass, eyes half-lidded, your arm stretched above your head as your fingers tried to catch the warmth. The heat soaked into your skin that reminded your body it was still alive.

The breeze danced lightly across your face, carrying the scent of earth and new flowers. Birds chirped somewhere distant, lazy and indifferent to what the world had gone through.

For once, it was quiet.

Jongseong dropped down beside you, his breath soft as he settled into the grass. His shoulder brushed against yours.

“You’re happy?” he asked, you turned toward him, giggling gently as you scooted closer, resting your head against his arm until your nose touched the soft fabric of his shirt.

“Yes,” you whispered, eyes closing. “The house you bought has neighbors. Real ones. I hear them laughing sometimes through the trees.”

You let your hand slide down into the grass, brushing over a patch of tiny purple flowers that had just begun to open. “The flowers are blooming again,” you added.

You felt his arm slide under your neck, pulling you gently into him. The warmth of his chest against your back. The sound of his heart, steady and strong.

“You’re blooming again too,” he said quietly, lips brushing the top of your hair. You smiled, tucking yourself in closer, your fingers playing absently with the hem of his shirt. 

“I talked to my mother,” you said after a pause, voice barely more than a breath.

Jongseong tensed slightly behind you, just surprise. His fingers paused mid-stroke along your arm.

“They cried,” you continued, your voice catching somewhere between joy and guilt. “Not because I ran… but because I was alive. Still me. I don’t think they fully understand what I’ve become, but they—believed me. That was enough.”

“That’s more than most people get,” he said softly. “More than I thought either of us would get.”

You turned just enough to look up at him over your shoulder, your cheek still resting on his chest. “They asked about you too, you know.”

He smiled faintly. “What’d you tell them?”

“That you were the reason I came back. That you weren’t a monster. That you were the most human thing left in the world.”

He didn’t answer that. Just held you tighter.

The breeze passed again, ruffling his hair, and for a few long moments, you stayed like that.

“I… got a job offer.”

You blinked, lifting your head slightly. “A job?”

He nodded. “From the Anti-Parasite Intelligence Unit.”

You sat up just a bit, your brow furrowing as you turned toward him. “Huh? That doesn’t even make sense—they tried to kill us. You think they won’t dissect you the moment you scan wrong on their monitors?”

He laughed under his breath, shaking his head. “Not this time. Heeseung vouched for me.”

You stared at him. “The guy who raided your house and locked me in a steel box?”

Jongseong gave a small shrug, like he was still trying to believe it himself. “He said watching us changed something. That they need people who understand—not just destroy. Someone who’s walked both sides.”

You exhaled slowly, processing that. “And… do you trust him?”

“No,” he said honestly. “But I trust myself.”

You looked at him, eyes soft but filled with worry. “I don’t want to lose this. What we have. What we made.”

“You won’t,” he said, brushing his thumb against your cheek. “I won’t let them take that. I just… I want to be part of shaping what comes next. So no one else has to live like we did.”

You were quiet for a moment, then reached up and ran your fingers through his hair.

“So…” you murmured with a crooked smile, “I’ll just be the one staying home? Waiting for you to come back from your mysterious, morally ambiguous government job?”

He chuckled, his eyes crinkling. “That doesn’t sound so bad, does it?”

You shrugged, teasing. “I don’t know. I was hoping for something a little more… exciting.”

Jongseong’s hand found yours, his fingers lacing between yours gently. “Then marry me,” he said.

You blinked. “W-What?”

He turned slightly onto his side to face you, pressing a kiss into the back of your hand. His voice didn’t shake. His eyes didn’t stray.

“Marry me,” he repeated, lips still brushing your skin. “Not because it’s perfect. Not because we’re normal. But because we survived. Because I want to spend every day I have left choosing you again.”

Your heart slammed against your ribs. You sat up slowly, stunned, the words echoing louder now in the silence between you. The wind quieted. Even the trees seemed to hush.

“You’re serious,” you whispered.

He sat up with you, his face close now, eyes full of something more vulnerable than fear. “I don’t know how long this peace will last. But I know I want to build something with you. Something that no one can take from us. Not science. Not governments. Not even time.”

You laughed. “You idiot,” you said, tears in your eyes. “You didn’t even bring a ring.”

He smiled. “You’d say no if I did?”

You shook your head, laughing again through the tears. “No.”

Then quieter, as your hand pressed to his chest, you whispered:

“Yes.” 

And when he kissed you this time, it was full of sunlight and the sound of blooming things.

“Pathology of Parasites.”

The words glowed dimly on the top corner of Jongseong’s datapad screen, the title of a document he’d first created over two years ago. 

Rows of categorized data: genome sequencing, mutation rates, cellular instability markers. Diagrams of parasite-host binding sites. Bone marrow compatibility. Immune rejection cycles. Timelines of when the parasite first entered his nervous system. His own handwriting, still neat back then, filled the digital margins—observations in shorthand, notes from sleepless nights.

Date: March 4 Neurological sensitivity peaked at 3:21 AM. No external triggers. Breathing accelerated. Controlled. Note: Dreamed in third person again. Strange.

But the pages had changed with time.

What began as cold, methodical data shifted the moment you entered his life. Your name didn’t appear at first. Then it did.

A single line:

“Second anomaly encountered. Maintains emotional awareness.”

Then another:

“Unconfirmed bond pattern. Same cellular merging. Same control.”

But eventually, it wasn’t numbers anymore. He'd begun sketching you—rough outlines in the corner of the file margins. Not parasite diagrams. Just you. The curve of your jaw when you smiled. The ripple of your morphing wing when light hit it just right. The split of your skull the first time you showed him what you really were—and how he still found you beautiful.

More files were added. Pages documenting the moments no microscope could capture:

“She laughed while watering the flowers today. Her breathing pattern returned to baseline immediately afterward. Possibly tied to emotional regulation.”

“Her T-cells adapted faster than mine. She smells like copper and summer rain when she’s shifting. No documented reason. Just… her.”

The datapad buzzed faintly beneath his fingertips. He sat in the quiet of his study, your silhouette just visible through the open window—standing in the garden, laughing at Jongjong as the cat tried to chase a butterfly it would never catch.

Jongseong looked down at the title again.

Pathology of Parasites.

He stared at it for a long time. Then, slowly, he raised a finger and tapped on the word Pathology.

He highlighted it, then deleted it to typed something else.