(You try not to think about how Mark has been pulling away from you, slowly but surely. How, ever since you confessed your feelings and ruined everything, he hasn’t looked at you the same. How you should’ve kept your heart locked tight, your love buried deep, just so you could keep him close. But you didn’t, and now nothing’s the same.)

So you wait, trapped within your four walls, your chest heavy with worry for your friends—your hero friends—who are out there risking their lives. You cling to the news like a lifeline, watching as the Invincibles tear through city after city, leaving thousands dead, all while they smile like it’s a game.

So you wait, and pray. Anxiety coils tight in your chest, pressing against your ribs until it feels like you might burst. But eventually, hunger forces you to move. You drag yourself to the kitchen, hands trembling as you fumble with the bread. You barely register the motion, your mind drifting to every terrible, unlikely scenario where Mark—your Mark—doesn’t make it. The thought alone makes your throat tighten.

It’s not good. You shouldn’t be this negative. But there are so many Invincibles, and if they’re anything like the Mark you know, then even the strongest heroes must be struggling. People will die. People you care about. And you try—God, you try—not to think about who, who, who.

Maybe that’s why you don’t hear him.

Not that there’s any particular sound to warn you. No footsteps, no creak of the floorboards. Just the faint hum of the refrigerator and the occasional rustle of the curtains by the open window.

One second, your eyes are on the bread on the counter, and the next, an unexpected voice brushes against your ear.

“Found you,” he whispers.

Your heart leaps into your throat, and you freeze, the knife slipping from your hand and clattering to the counter. Your breath hitches as you turn your head slowly.

(Vaguely, you think about Mark fussing over you like a mother hen, that familiar crease forming between his brows. “You really shouldn’t leave your window open like that,” he’d chide, voice laced with exasperation. “Anyone could get in.”

But you’d just laugh, brushing off his concern. “It’s a sixth floor, Mark. And you’re the only weirdo who does.”

I’ll always leave my window open for you, you wouldn’t say.

I’ll always be waiting for you to come, you couldn’t say.)

And then, there he is.

“Mark?” you breathe, relief crashing over you in an overwhelming wave. You don’t notice the differences—how his suit is wrong, smeared with fresh blood and viscera that drip onto your clean floor. How his eyes are too wide, too unblinking, something wild lurking behind them. You don’t see any of it. All you see is Mark standing there, safe, alive. “Oh my god, Mark.”

You rush to him without hesitation, arms outstretched, wrapping him up in a desperate embrace. You’ve been so worried, so consumed by the gnawing anxiety of losing him, that just hearing his voice, just seeing him, shatters any rational thought.

For a moment, he stiffens against you. But then, his arms lock around you with a force that nearly knocks the breath from your lungs. It’s too tight, too much, an intensity Mark has never held you with before. That should have been your first warning. But as soon as he hides his face in the crook of your neck, his breath warm against your sensitive skin, you forget about everything that seems wrong. You forget about the blood, the wild look in his eyes, the way his grip feels almost possessive. All you can focus on is the way he inhales deeply, as if he’s been starved of this—of you.

You shudder, heart pounding for reasons you can’t quite explain, and then he sighs, low and satisfied, the sound vibrating against your skin.

(“You smell really good,” Mark would murmur, crowding into your space, his nose nearly brushing your neck as he inhaled deeply. “Like, really good.”

You’d shove at his chest, face flaming despite yourself. “Christ, Grayson, you’re not a dog. Back off.”

He’d laugh—that stupid, sunshine-bright laugh that always made your pulse stutter—and lean against the lockers with infuriating ease. “Just being honest… Hey, you could tell me what perfume you use. Maybe then Amber would actually like me on our next date.”

Your chest would tighten, eyebrows knitting together before you could stop them.

“Can’t help you there, pretty boy,” you’d say, slamming your locker shut harder than necessary. When he raised an eyebrow at you, you’d flash a razor-thin smile. “Turns out it’s natural. One hundred percent me.”) 

“It’s you…” Mark whispers, his lips brushing against your neck. You hold your breath, trying to suppress the goosebumps rising on your skin, but it’s futile. His voice is low, almost reverent, and it sends a shiver down your spine. He squeezes you tighter, his arms like steel bands around you. “Oh, it’s you.” 

“Mark?” you ask hesitantly, confusion laced in your voice. “What is it? Are you hurt?” 

You try to push yourself away, hands pressing against his shoulders to create some space—because you can’t do this. You can’t handle him holding you like this, his voice hoarse and low against your neck, his breath hot enough to make you weak. You’re friends. Only friends. He’s made that much clear, and this—this isn’t fair.

But you barely manage to put a few inches between you before he whines, a sound so raw and desperate it catches you off guard. In an instant, he pulls you back in, burying his face deeper into the crook of your neck, his grip unyielding.

“Mark?” you whisper again, voice trembling.

“Not yet,” he replies, his tone pleading. “Let me hold you one more minute.” 

And you don’t have the strength to refuse him.

Yet, as the seconds tick by and he keeps clinging to you like a child afraid to let go, you can’t help but notice the things you’ve been ignoring.

Why is Mark here? Why would he suddenly show up at your apartment when he’s supposed to be out there, saving the world? Why would Mark—the same Mark who’s been keeping you in this strange, distant limbo for weeks, who barely speaks to you beyond polite conversation, who’s been looking at you with a mix of discomfort, guilt, and something else you can’t quite place—be holding you so desperately right now?

Then your attention drifts to his clothes. His suit, but not really his suit. The blood—the thick, dark blood that, now that you’re truly paying attention, doesn’t belong to him. And it’s a lot, pooling around your feet, staining your floor, soaking your clothes.

A sickening weight settles in your stomach, curling, twisting, nagging at the back of your mind. Your arms go slightly limp around him, hesitation creeping in where relief had been just moments ago. Your brain, which had felt so light, so grateful just a minute ago at the sight of him safe, suddenly flashes back to the news. The destruction. The Invincibles terrorizing the world.

And you wonder.

Finally, he exhales—a slow, steady breath, like someone bracing themselves. Then, he lets go, his hands lingering on your arms as if he’s reluctant to break contact entirely.

“Y/N…” he whispers, a wide grin stretching across his face. It’s an unusual smile, unnatural, amused when it shouldn’t. “Here’s where you’ve been hiding, huh?”

“Hiding?” you ask, unsure. “Well—I can’t really do anything else, can I?”

Mark smiles spreads. But his eyes—there’s something in them you hadn’t noticed before. Wide, almost frantic, something raw burning behind them. The dark circles under them make him look exhausted. His hair is a mess. And yet, his expression softens as he studies you, gaze tracing over every feature like he’s trying to memorize you. It’s so intense, so intimate, it nearly steals your breath away.

“What—What are you doing here?” you ask, glancing away, flustered. “Is it—is it over? The fight?”

He coos, a gloveless hand reaching for your chin to tilt it back toward him with a grip that’s firm, almost possessive. “Oh, it’s over. There’s nothing to worry about anymore,” he says, voice light, too light, too nonchalant for someone who just came from a battle. Mark doesn’t speak like this after a fight—he’s never so casual, so detached.

(Mark’s hands would dig into his hair, shoulders slumping in defeat. “I’m just—I keep fucking up.”

“You’re not,” you’d tell him, hand pressing warm circles between his shoulder blades. “You save people, Mark. Every single day—”

“Bullshit!” He’d jerk upright so fast you’d recoil, chair screeching against the floor. “More people die than I save!” He’d pace, fingers twisting in his hair. “Stop—just stop telling me I’m not fucking up! Stop trying to—to make me feel better! You don’t understand how I feel!”

Your chest would tighten, fingers curling into empty air where he’d been. “I know I don’t.”

“Then stop!”

“However—” you’d stand up as well, eyes locking onto his as you caught his face in your hands, palms pressing gently against his cheeks. Mark would freeze, his breath hitching, wide eyes locked onto yours. “However, I know the world would be worse without you in it. Just thinking about the possibility of not having Invincible on our side—it scares me. Because you’re the only one strong enough to protect us. The only one who can stand up to the worst threats.”

Your thumb would brush over his cheekbone, touch impossibly gentle.

“And I’m sorry you have to carry that responsibility, Mark. But you’re not failing. Not to me.”

His expression would crumble, his eyes glistening with unshed tears before he’d pull you close, burying his face in your shoulder. His breath would shake, and you’d feel his fingers dig into the fabric of your shirt.

Your cheeks would burn, heart stuttering, but you'd swallow your feelings and offer only the comfort a friend should.

“I’m sorry,” he’d murmur, voice thick. “I’m sorry.”

You’d breathe in, closing your eyes. “Don’t be.”)

Your cheeks burn as he tugs you closer by the chin, forcing you to look straight at him. Your hand instinctively reaches for his wrist, but you don’t pull away. You should. But you don’t. Yet, you can’t stand the weight of his stare, so intense, so close, it feels like it’s peeling back layers of you, exposing everything you’ve tried to suppress.

“Nothing to worry about?” you force the words out, trying to ignore the heat flooding your face and the fluttering sensation in your stomach. “You sure?”

“I’m sure,” he nods, his voice low and steady. Then, without warning, he leans closer again, his face burying into the crook of your neck, inhaling deeply like he just couldn’t get enough. “Oh, shit. How I missed this.”

“Mark?” you ask quietly, voice trembling despite your efforts to steady it. His breath is hot and electric against your skin. The warmth blooming in your face spreads down, coiling through your body. “What are you doing? Jesus—this isn’t like you.”

“Oh, really?” he hums, lips ghosting over your pulse. The brush of them—so soft, so deliberate—makes you shudder. “Not even a little?”

“No…” you exhale, shivering when his arms snake around your waist, squeezing hard enough to make you squirm. “No. Mark. What—what are you doing?”

Your hands reach for the counter behind you, gripping the edge tightly, desperate for something to anchor you. But Mark—his scent, his body pressed so tightly against yours, his breath burning against the most sensitive part of your throat—makes it impossible to focus, impossible to think. It’s like everything around you is spinning, and you can’t make sense of any of it.

“What do you think I’m doing?” he asks, his tone amused and teasing, like this is all some game to him.

And that finally makes you scowl, the heat in your cheeks now burning with a mix of anger and humiliation. You inhale sharply, trying to regain your senses, but an ugly feeling of shame and hurt settles heavily in your chest.

You lift a hand and push him, or at least try to, your strength no match for his. Still, he complies, pulling away with a reluctant sigh, an annoyed expression flickering across his face as he finally tears himself from you.

“This isn’t funny, Mark,” you say, glancing away, unable to bear the intensity of his stare. “Stop it.” 

“Stop what?” he complains, his fingers digging into your waist as if he’s reluctant to let you go entirely.

“That,” you snap, gripping his wrists and prying his hands off. “You can’t just—just ignore me for weeks and then suddenly show up and treat me this way. It’s—it messes with my head! It’s not fair, Mark!” your breath comes heavy, your chest rising and falling as you struggle to form the words. Your eyes drop to the floor, and you add quietly, “Just stop.” 

He’s silent for a moment, and you can feel his gaze burning into you, searching, analyzing. His head tilts slightly, as if he’s trying to piece something together.

“We’re not… together?” he asks after a beat, his voice incredulous, like the idea is absurd.

The question makes you flinch, and a fresh wave of anger surges through you.

(“I’m sorry,” Mark would mutter, his hand awkwardly rubbing the back of his neck, his eyes avoiding yours. “I just—don’t see you that way.”

You’d glance away, your lips pressed together in a tight line, trying to hold back the sting of rejection. “I’m sorry too.”

“It’s just—there’s someone else I wanna try it with.”

“I get it.”

“I’m sorry.”

“I know,” you sigh, wanting Earth to swallow you whole and disappear forever. But this is Mark, and you couldn’t bear living without Mark. “We’re still friends, right? This doesn’t have to change anything.”

He’d smile at you, his eyes creasing at the edges in the way you adored. “Yeah—Friends!”)

“Of course not!” you snap, voice rising. “You made it very clear you—you love someone else!”

You scoff, crossing your arms over your chest as you take a step back, putting some much-needed distance between you and his overwhelming presence. Was he mocking you? Playing some cruel joke?

But then again, as you pace around the kitchen, trying to hold yourself together, your eyes flicker to his odd suit, to the blood clinging to him, to the confused, almost baffled look on his face. And you think again—why is Mark here? Why, really?

Is he even Mark—

“But Y/N—” he whines, trailing after you like a lost puppy, his voice pleading, “—I would never, and I mean never look at anyone else but you!”

You frown, shaking your head. “I can’t even believe you’re saying this to me right now,” you mutter, trying to keep your voice steady. “Did you hit your head too hard fighting those lunatics?”

You don’t notice the way he tilts his head at your words, don’t catch the way his eyes darken, flashing with something unreadable.

“If you don’t have anything better to do, then just leave,” you huff, bitterness lacing your tone. “I don’t wanna—humiliate myself any more than I already have. You had your fun. So go away.”

You turn on your heel, heart pounding as you stride toward your bedroom where your phone is charging. There’s a gut feeling gnawing at you, a sensation you can’t shake, and you need confirmation. You need reassurance.

Is the Mark standing behind you even your Mark at all?

Your gut twists violently, but you can’t shake it. The second you step into your bedroom, your hand fishes for your phone, fingers trembling as you scroll through your contacts and press the button.

But Mark hasn’t left. He follows right after you, moving with an easy, unhurried stride, and when he realizes what you’re doing, a slow, knowing smile spreads across his face.

“O-ho?” he hums, amusement dripping from his voice. “My, my, Y/N, why’re you calling me?” 

His hand moves, effortlessly covering yours, fingers warm and firm over your knuckles. The phone rings—once, twice—and Mark leans in, his breath brushing against your ear, voice low, teasing.

“I’m right here, sweetheart,” he murmurs. “You don’t need anyone else.” 

Your breath hitches. The sound of the third ring barely registers before he plucks the phone from your grasp with unnerving ease. You don’t even resist—your fingers tremble as they slip away from the device. Not that it would have done anything, anyway. The fifth ring echoes into silence, then clicks to Mark’s familiar voicemail. Useless.

The air in the room shifts, heavy and overwhelming. You watch, frozen, as he casually places your phone on your desk, just far enough out of reach.

Then, the moment your eyes meet his, you know.

This isn’t the Mark you know and love.

Mark hums, content, utterly unbothered as he slides back into your arms like it’s the most natural thing in the world. He sighs, pleased, like he belongs there, like nothing’s wrong.

Maybe you’re in shock. Maybe it’s fear, or disbelief, or survival instincts.

Because you let him.

Your arms fall open, letting him settle more comfortably against you, his weight pressing into you as he nuzzles closer. His warmth, his scent, the way he holds you tight—it’s all too much. And you—weak-kneed, breath unsteady—let him.

“Are you going to kill me?” you can’t help but ask eventually, voice quiet, barely a whisper.

He makes a confused sound in his throat, the vibration brushing against your skin and sending a shiver down your spine. “Hmm—not yet.”

Not yet. You should be terrified. Every nerve in your body should be screaming for you to run, to fight, to do something other than stand there, frozen, pliant in his grip. You know he’s dangerous. You know he could snap your neck without a second thought.

Yet—a curious thing happens in your brain.

You’re not afraid. You can’t be.

Because when your eyes settle on this Mark—and he looks exactly like the Mark you know, the Mark you have feelings for—something just… doesn’t click the way it should. Fear doesn’t come. Disgust doesn’t rise in your throat. Dread doesn’t tighten its grip around your chest.

Because he looks so much like Mark. And duh—he is Mark. But not yours, and that alone should be enough to make you want to bolt. Yet—as he nuzzles into your neck, his hot breath tingling against your skin, his solid body pressing into yours with a firmness that feels both grounding and overwhelming, and the way he called you ‘sweetheart’—it all makes you want to give in to him.

The feelings you’ve buried—the ones you’ve shoved down since the day Mark rejected you, since the day you forced yourself to be okay with just being friends—are clawing their way back to the surface, stronger, faster, more consuming than ever.

“Oh yeah, you don’t have to worry though,” he says, his lips brushing against your pulse in a way that feels deliberate, calculated. “It’d be such a waste to kill you so fast. I came here for you, after all.”

His lips trail along your neck, slow and purposeful, and despite everything—despite knowing this isn’t right—you sigh, shivering at the unfamiliar, intoxicating affection. He moves upward, lips ghosting over your skin until he reaches your ear, nipping at your earlobe.

“Mark…” you breathe, eyes fluttering shut, body melting under his touch.

“Ohh, I know, baby,” he mutters, voice thick with amusement, dripping with smug satisfaction. You can feel the smirk curving against your skin. “I know everything you like. I know every inch of you. Let me show you.”

Your body betrays you.

Your mind knows better—knows that this Mark isn’t yours, that the weight of his body pressing into yours should send alarms blaring through your head. But when his fingers skim your waist, when his breath fans hot against your skin, when he sighs like he belongs here—your body doesn’t fight him.

It welcomes him.

Your hands twitch at your sides, uncertain, but you don’t push him away.

“I can’t believe this universe’s Mark wouldn’t date you,” he muses, fingers wandering, exploring, curling behind your back before cupping your ass and squeezing. A choked sound catches in your throat as heat floods through you, your knees nearly giving out. “I mean—look at you.” His voice dips, teasing, triumphant. “Barely resisting.”

You bite your lip, swallowing a sound you refuse to let escape.

He laughs then—open, mocking, and so, so cocky. “And here I thought I’d have to fight this Mark over you, but—” his grin widens, wicked and pleased. “I don’t think I have any competition, sweetheart.” His lips brush against your jaw, his grip tightening possessively. “You’re all mine.”

He starts to push against you, forcing you to walk backward until the back of your knees hit the edge of your mattress. You fall onto the bed, breathless, your heart racing as he looms over you, his eyes dark and hungry.

“Just mine, okay?” he growls, his voice low and dripping with possessiveness. “I wouldn’t let anyone else touch you—not even him. Not even this universe’s pathetic version of me.” He scoffs, his hands gripping the hem of your t-shirt and tugging it off with a harsh, almost desperate motion. “Loving someone else? When I have you? He’s a fool. He doesn’t know what he’s missing. Y/N—you have no idea how much I’ve missed you, how much I’ve—” 

He groans, biting his lip hard enough to leave a mark, his eyes raking over your exposed skin like he’s starving and you’re the only thing that can satisfy him. You shiver, a deep blush spreading across your face. It’s too much, too fast, and you feel utterly exposed as his gaze devours every inch of you. His expression twists, a mix of desperation and adoration, as if he’s memorizing every detail of your body, committing it to memory so he’ll never forget. His fingers twitch, hovering over your skin but not touching, like he’s savoring the moment, stretching it out just to make you squirm.

It’s too intimate, too intense, and for a fleeting second, you forget that he’s dangerous.

“Stop staring,” you weakly complain, turning your face away.

“Oooh, oh-ho-ho, yeah, baby, you’re just like I remember...” he laughs, his breathing uneven, his voice shaking with a wild, almost manic energy. “Yeah—I’ll never let him have you. Never let anyone else even look at you. You’re just mine—holy shit.” 

And then he dives.

His lips crash into yours, claiming rather than kissing, his entire body pressing you down into the mattress, forcing your legs open. It’s desperate, feverish—starving. His tongue pushes past your lips, stealing your breath, and you moan into his mouth, eyes squeezing shut as you struggle to keep up with his messy, frantic rhythm. He kisses you with a ferocity that leaves you dizzy. He groans and growls against your lips as his hands roam your body, gripping and groping every inch of exposed skin. His fingers brush against your nipples, teasing and possessive, and you can only take it, breathless and overwhelmed, your mind spinning as he claims you in every way he can.

“Yeah, baby, keep making those sounds for me,” he murmurs against your lips before diving in again, swallowing every breath, every whimper like it fuels him. “So, so good. Fuck, you have no idea—it keeps me going.”

Your breath stutters as his fingers pinch your nipple, hard enough to make your back arch, a sharp gasp escaping your lips. His free hand fists in your hair, yanking your head back to expose your throat as he grinds his hips down. Your legs part without a second thought, welcoming him, urging him closer until he’s right there, pressing into you, slotting himself between your thighs.

“That’s it, spread wider for me,” he pants, voice dripping with dark approval. “You’re still so good, fuck.”

Your lips burn, swollen and tingling from his kisses, and when you blink up at him through your lashes, you catch the glint in his eyes. His pupils are blown wide, the usual warm brown of his eyes swallowed by something feral. That smirk—all sharp teeth and predatory hunger—should terrify you. Because the Mark you know has never looked like this before. This unhinged and unsteady. It’s a sharp, gut-wrenching reminder—this isn’t your Mark. This isn’t the sweet, awkward Mark who you fell for, the one you trusted. This Mark is wrong, a twisted mirror image, and you should be fighting him, shoving him away, clawing your way out even if it’s futile—

But then he leans down and presses the softest, faintest kiss to the tip of your nose.

And your mind blanks.

Because holy shit—Mark, the man you’ve been pining over for months, years, is kissing you. And it feels so good, so intoxicating, it messes with your head, scrambles your thoughts into something dangerous.

You know it’s wrong. You know this isn’t him. It’s like pouring your feelings into a stranger, a shadow wearing his face. But fuck—this Mark grinds against you, slow and deliberate, and you feel him, the hard press of him against you, thick and aching with want.

You gasp, body tensing, startled by how badly he wants you.

“Ohh, baby,” he whines, voice thick with desperate need, like he’s been starving for this moment for lifetimes. His fingers dig into your hips hard enough to leave bruises, marking you as his. “Let me—” His hips roll again, dragging his thick length against your own, and you choke on air. “Let me make you feel good. Let me make you come, please, baby, please.”

Teeth scrape along your jaw before finding that sweet spot beneath your ear—the one you didn’t even know was sensitive—and you arch off the bed with a broken moan when he sucks harshly at the skin. His lips, his tongue, his teeth—he maps every inch of you like he’s memorized you, like he already knows every single weak spot before you even realize them yourself.

“Please? Please?” he keeps begging, voice so raw, so desperate, so utterly pathetic it makes you dizzy.

And you—you’re still too caught off guard to react properly. Because Mark—your Mark—never looked at you like this. Never even wanted you like this. But this Mark? He’s rutting against you like an animal in heat, his massive cock straining against his suit as he whimpers your name, making your head spin.

It’s wrong. It’s so, so wrong. Because Mark rejected you. Because you told yourself you’d be fine with just being friends. Because this isn’t even him—just the evil, dangerous version of him.

(Mark would slip into your open arms, his body heavy with exhaustion.

“I just—I’m scared,” he’d admit, voice muffled against your shoulder. “Scared of turning into my father. Scared of hurting people. And after everything with Angstrom…” his voice would trail off, fingers twitching against your back like he’s afraid to hold on too tightly.

You’d run a soothing hand along his spine, grounding him. “What do you mean?” you’d ask, gentle, coaxing him to keep talking.

“He—he talked about me like I was a monster,” Mark would whisper, voice tight. “Like there’s a version of me out there who destroyed everything. A version of me who’d kill everyone I love. A version of me who’d… destroy you.”

A slow, quiet exhale would leave your lips. “But you’re this Mark,” you’d remind him. “You’re my best friend. And you’d never do that.”

There’s a beat of silence. Then, slowly, Mark would sags against you, burying himself deeper into your warmth.

“Yeah,” he’d murmur, barely more than a breath. “Never.”)

But when you move—when you grind up into him, your body answering before your mind can stop it—he makes a noise, something between a groan and a sob, and it’s so wrecked, so full of relief it makes your stomach twist.

Your arms loop around his neck, dragging him closer, pressing your bodies so tight together you can feel his heartbeat hammering against your own. And when his teeth sink into your throat, sucking so hard you know it’s going to bruise, a sharp, broken sound escapes your lips.

The room burns around you, filled with the obscene sounds of his desperate whines and your shaky gasps, the slick friction of fabric between your joined bodies.

“Yeah—” you gasp, nails raking down his back as pleasure coils tight in your gut. “Fuck, Mark, just—Do it. Do it.”

He groans, deep and guttural, a sound so full of possession it sends a sharp pulse of heat down your spine. Then his teeth sink into your neck again—hard enough that you know he’s breaking skin. And when his tongue licks the wound, sucking the blood like he owns you—you know he’s got you.

Your mind fractures into white-hot static as every rational thought—the blood crusted on his suit, the madness in his eyes, the thousands he’s slaughtered, the fact this isn’t your Mark—dissolves into primal need. Nothing exists but the electric pleasure coiling tighter in your gut with each desperate grind of his hips.

“Mark,” you sob, voice breaking as your body arches against him of its own volition. Your fingers twist in his hair, pulling him closer. “Oh god, Mark. Fuck. Mark.”

A guttural snarl vibrates against your throat as he claims your mouth again, his tongue pushing past your lips in a violent mimicry of what his hips are doing against yours. The growing dampness between your thighs should shame you, but all you can focus on is the delicious friction, the way his teeth scrape your bottom lip when you moan too loud.

But it’s still not enough.

Not with these fucking clothes between you, not with the way you’re both rutting against each other like wild animals, frantic and insatiable. It’s maddening. You need more.

Your nails claw at his back, at his suit, needing to feel his skin the way he’s feeling yours.

“Get it off,” you manage to gasp between feverish kisses. “Please, Mark.”

With a dark chuckle that sends shivers down your spine, he rears back just enough to grip his suit’s collar. The fabric shreds like tissue paper beneath his strength, revealing sweat-slick skin you immediately map with trembling fingers. His pupils blow wider at your touch, chest heaving as he crushes you back into the mattress.

“Oh yeah, Y/N...” he purrs, his voice thick with satisfaction as his fingertips trace the dark marks blooming across your neck like bruises. Proof that you belong to him. “Bet this universe’s Mark never made you feel this way, did he? Never touched you like this?” his grip tightens suddenly, making you gasp. “I’m the first, aren’t I? The only one who’s ever had you like this?”

You whimper, nodding without thinking, legs locking tight around his waist, keeping him close, keeping him there.

His grin stretches, wild and triumphant. “He doesn’t know what he’s missing,” he murmurs, his hand trailing down with agonizing slowness—down your neck, across your heaving chest, brushing over your sensitive nipples, gliding down your stomach... Until, finally, his fingers settle between your legs, pressing against the thick, aching bulge in your sweatpants, squeezing just enough to rip a needy moan from your lips. “Look at you,” he breathes, eyes wild with possessive hunger. “So fucking perfect for me. So ready to be mine. Does your Mark know what a desperate little thing you are? How easily you fall apart under my hands?”

His smile tilts, both awestruck and predatory. Then, he leans in until his lips brush yours, his hand working you through the fabric with rough, perfect strokes that have you trembling.

“So hard just for me,” he murmurs against your mouth. “He could never make you feel like this. Never touch you like I do.” His teeth graze your bottom lip. “He could never compare. I’m better, I’m stronger—”

He peppers kisses along the corner of your mouth, your flushed cheeks, tender and teasing, a sharp contrast to the way his pace quickens—faster, rougher.

“—I could make you feel even better,” he purrs, pressing his lips against your ear, voice so low, so filthy it makes you shudder. “Make you scream my name, so loud and clear, maybe the other Mark could even hear you.”

Your breath stutters, a deep moan slipping from your lips, body twisting under his touch.

“Ohh, you’d love that, wouldn’t you?” he chuckles, breath warm against your neck, teasing, taunting. “You’d love to let him watch. Love to let him see you break for me. Let him realize what he’s lost—what he’ll never have again.”

His voice dips lower, sinking into something darker, something twisted.

“You’d let me fuck you in front of him, wouldn’t you?”

Your body jolts, heat flashing through you in a violent rush, shame curling in your stomach like a vice.

“N-no—!” you gasp, eyes squeezing shut, face burning with humiliation. “No, I wouldn’t—”

But your body betrays you. Trembling, surrendering, completely giving in—your hips rut desperately against his hand, your pre-cum soaking through the fabric, staining it.

“Liar,” Mark breathes against your swollen lips before crushing them again in a kiss that’s hot, rough, and bruising. “I can feel how much you want it. How much you need it.”

His thumb presses cruelly against the head of your cock, rubbing slow, torturous circles through the fabric, making you see stars. Your whole body jolts, a strangled gasp tearing from your throat.

“Maybe I should drag him here,” he whispers, grinning against your lips. “Make him watch as I fuck you so good, you forget he’s your Mark Grayson. Make him see how perfectly you take me—how you were always meant to be... ours.”

You shake your head frantically, words lost between your ragged gasps. “No—”

But your back arches, cock throbbing obscenely against his palm. The more he whispers these filthy fantasies, the harder you get, hips stuttering, desperate and eager, seeking more, more, more, as his words sink deep into your brain, filling you with something forbidden, something wrong—something you like.

The pressure builds unbearable. His fingers move with ruthless precision, stroking, squeezing, dragging you to the edge, pulling sounds from you that should be humiliating—but you can’t stop.

Then you think about it. About your Mark. The one who’s still out there, fighting, struggling, exhausted and worn down. You think about what would he think. What would he do if he saw you like this. You imagine your Mark’s confused face watching—the horror in his eyes as he sees you come apart under his doppelgänger’s touch, moaning and whimpering like some cheap slut desperate for any version of him.

“Mark,” you sob as waves of shame and pleasure crash over you. “Mark, Mark—”

Mark exhales a breathy chuckle, eyes dark with fascination. “Oh-ho-ho. That’s it, baby. I’m here. I’m right here.”

And then it hits you.

White-hot pleasure blinds you completely as you spill in your sweatpants like some untouched virgin, his name tumbling from your lips in a broken prayer. Your body arches violently, convulsing as your legs clamp around his waist like a vice. Your hands claw at his shoulders, anchoring yourself to him, to this moment, to reality itself.

“Jesus…” he exhales, almost in awe, his grip tightening possessively. “My god… so perfect.”

You’re reduced to a trembling, gasping mess—shaky legs, toes curling, vision whiting out as the aftershocks rip through you. Mark watches it all with a smug, hungry smirk, his eyes locked onto your face, drinking in every twitch, every quiver like he’s trying to memorize it, to brand it into his mind.

“Yeah—let it out, Y/N,” he whispers, voice thick with satisfaction. “I did this to you. I made you feel this good.”

(“Does that feel good?” Mark would mutter into your ear, his hands still working awkwardly at the knots in your back.

You’d groan, face mushed into the pillow. ”Yup. Feels good. Really good.”

“I still can’t believe you’re making me do this,” he’d grumble, brows pinching together.

You’d stifle a laugh, eyes fluttering shut. ”You lost the bet, Grayson. Now keep massaging my back. My muscles are still wrecked from all the damn work you put me through covering you at Uni.”

“William never complains.”

“Because William sucks at covering! The only reason you’re not suspended is because I’m just too good at lying—Oh! Yeah! Right there, don’t stop,” you’d sigh, melting into the mattress. ”Oh my god, yes…”

His hands would freeze, fingers pressing hesitantly into your skin. ”…Can you stop making those sounds?”

“What sounds?” you’d murmur, half-dazed.

Mark would be quiet for a beat, then resume with a sigh. “Never mind. How about this? Does that feel good?”

“Mmmh, holy shit—yes!”)

Finally, you sink into the mattress, chest rising and falling in desperate, uneven breaths as your climax wears off. Your head falls back against the pillows, glazed eyes barely tracking Mark’s movements. His fingers leave the bulge in your sweatpants, moving to your waistband, fumbling briefly before tugging your sweatpants and underwear down, inch by inch.

“Just let me take care of you,” he mumbles, dazed. “Always gonna take care of you.”

The cold air bites at your oversensitive cock as he yanks it free, his pupils blown wide as he stares at what’s his. Before you can even process the exposure, Mark flashes you a wicked grin before his lips wrap around your cock, hot and wet and devastating. Your hips jolt, body convulsing at the sensation. His tongue swirls, savoring, exploring, a deep groan rumbling in his throat as he tastes you. The overstimulation is unbearable, electric. A strangled, pathetic cry rips from your throat as your hands fly to his head, fingers tangling in his hair, trying—failing—to push him away.

“Mark!” you jolt, thighs snapping shut around his head, trembling, squeezing, clutching. “Oh my god. Oh my god—oh my god. No—”

A deep, satisfied groan rumbles through him, vibrating against your cock and making you yelp. His hands pin your thrashing hips down, holding you there, making sure you take it.

“Mark—”

“Mine,” he snarls between filthy, wet sucks. “Gonna taste every fucking drop.”

The overstimulation borders on painful as he works you ruthlessly through your sensitivity, your cries growing increasingly broken. And yet, somewhere beneath the overwhelming pleasure, a traitorous part of you preens at being so desperately wanted.

Wanted. By Mark. Not your Mark, not the one who’d gently rejected you, but a Mark all the same. A version from some twisted reality who’d torn through dimensions just to claim you. And it sickens you—the satisfaction curling in your gut, the twisted pleasure of knowing that somewhere, in some reality, Mark has always wanted you. Craved you. And if he’s here, willing to ruin you, to unravel you with nothing but his mouth, then who are you to stop him?

His tongue works you over with filthy precision, hot and wet and perfect in ways you’d never dared fantasize about. You writhe beneath him, sheets twisting in your fists, as your gaze drops to where he’s sucking you off—Mark Grayson, on his knees for you, eyes close in joy. The sight alone punches a broken noise from your throat.

“F-fuck—!” you arch violently, tears spilling as pleasure crests into near-pain. “Fuck, I can’t—Mark, please, I can’t—!”

Finally, he lets you go with a slick, obscene ‘pop.’ He pants, breath heavy, lips red and wet as he leans over you. You’re gasping too, your chest rising and falling in erratic bursts, your body trembling like you’ve run yourself into the ground.

Mark watches you, gaze trailing over your flushed skin, your wrecked, tear-streaked face. And then he grins.

“I love you like this,” he murmurs, voice rough. His thumb swipes at the wetness on your cheek. “Love it when you cry.”

(“I hate when you cry,” Mark would say, his thumb brushing a tear from your cheek. ”I hate it even more when it’s me who made you cry.”

You’d slap his hand away, face twisting into a scowl. ”Shut up, Grayson. How dare you—how dare you act upset.” Your voice would shake, anger sharpening every word. ”You can’t even say sorry. Can’t even fake an excuse for why you’ve treated me like this, ignoring me for months… And don’t try to deny it—William noticed too!”

He’d wince, eyes darting away. ”I can’t—I can’t say it.”

“That you’re sorry?” you’d scoff, disbelief dripping from the words.

Mark would bite his lip, shaking his head desperately. ”No! Of course not. It’s—the reason.”

“The reason you’ve been pulling away?” you’d snap, swiping the back of your hand across your wet cheek. Then, it would hit you—heart lurching. ”Is it… because I confessed? I thought we were past that. That we’d still be friends no matter what…”

Your voice would crack, gaze dropping to the floor.

Mark would flinch, shoulders slumping in defeat. ”It’s part of the reason.”

“I don’t understand,” you’d murmur, voice breaking. ”You said it didn’t matter. You promised it wouldn’t change anything.”

“I don’t understand either,” he’d admit, hand scrubbing roughly through his hair. ”Just—just give me time. I need to… figure some things out.”

“You won’t even tell me?”

Mark would press his lips into a tight line, guilt flashing across his face as his gaze caught on your tear-streaked cheeks. ”I can’t.”)

A helpless sob rips from your throat as he surges forward, capturing your bruised lips in a desperate, feverish kiss. He moans into your mouth, deep and needy, and you can taste yourself on his tongue—hot, salty, intoxicating. The realization only makes you burn hotter.

Then, a moan rattles in your chest as his free hand trails lower, fingers teasing where you’re most sensitive. Your gasp is sharp when one presses against your entrance.

“W-wait—” you huff, shaky hands pressing against his broad shoulders. “No… I’ve never—never done this…”

Mark freezes, his expression shifting from surprise to something terrifyingly euphoric. “Oohh, Y/N can you get any more perfect for me? My god—not even in my universe were you a virgin.” He chuckles, low and dark. “Were you saving yourself for him? Hoping he’d finally see you the way I do? He’s such a fool—But I will make you feel good. I’ll make you feel so good.”

As he speaks, his hands roam, gripping your thighs with an iron hold before pushing them up—forcing you open, leaving you vulnerable beneath him. Your face flushes with embarrassment and arousal, your hands instinctively gripping the sheets tightly at the sheer obscenity of the position. He flashes a playful grin, his breath warm against your ass, causing you to gasp and breathe unevenly.

“What— What are you doing?” you stammer weakly, squirming uncomfortably, peering down with shame as Mark leans over your hole, a wide smirk across his face. You realize a second too late was he’s up to. “Wait, wait—Oh my god!”

Your back arches, mouth letting go a deep, throaty groan and your eyes rolling back when Mark inserts his tongue, licking and lapping at the inner walls of your hole, sucking and nibling and kissing. Your head throws back against the pillows, skin burning so hot you swear you’ll melt into the sheets. The sensation is overwhelming—Mark’s hot tongue delves between your cheeks with shameless enthusiasm, licking and probing with obscenely wet sounds that make you squirm uncontrollably. You writhe in delicious contradiction, torn between pulling away and pressing deeper into his merciless mouth.

“Mmh, look at you—” Mark pants between greedy licks, his voice thick with arousal. “That’s it. Let me hear how good I make you feel.”

You’re beyond responding, your hips stuttering and your asshole clenching and unclenching with the unfamiliar, yet intoxicating sensation. The pleasure is so intense you bite your lip raw trying to contain the filthy sounds fighting to escape. It’s useless, though, because Mark keeps eating you out and it only takes a few minutes of this sweet torture until you start whimpering and mewling like a little whore.

“F-fuck—!” the curse tears from your throat as your toes curl and back arches off the bed. Your cock stirs back to full hardness, dripping pathetically against your stomach. “Fuck—Mark, my god! Don’t stop, fuck—Oh my god—”

You’ve never been touched like this before—it never even crossed your mind, not even in your wildest fantasies. But damn, it’s the best thing that’s ever happened to you. Who would have thought that being pleasured like this could feel so incredibly good? You might just climax right then and there with Mark’s warm, skilled tongue working its magic, and you’d die happily. Your erection is unbelievably hard, leaking pre-cum onto your stomach, but you don’t dare touch yourself because you’re too busy gripping the sheets for stability.

But then Mark pulls away, and you moan and whimper with need, trying to tighten around him in an attempt to draw him back.

Mark smirks and chuckles, and you feel your cheeks heat up in embarrassment at your own lewdness.

“God, baby, you’re so perfect for me,” Mark rasps, pulling back just enough to loom over you. His lips glisten with your taste, his breath coming in ragged bursts. “Look at you—already falling apart just from my mouth. Think you’re ready to take me, sweetheart? Think that pretty little hole can handle my cock?”

You hadn’t noticed before, too lost in the haze of pleasure—but Mark’s hips have been moving restlessly the whole time, fucking the air with desperate, instinctive thrusts as he devoured you. Now, as he looms over you, you can feel him, hot and throbbing, grinding against your thighs through the thin fabric of his suit. And fuck—he’s massive. Even through the material, you can feel the sheer size of him, the way he twitches with every needy thrust. And yeah—his mouth has left you slick, loose, ready to be filled—but shit. Viltrumites have monster cocks, and it scares you.

And yet—and yet, as Mark moves against you, teasing, testing, making sure you feel the sheer girth of him even through fabric, all you can feel is hunger, a desperate need.

So, huskily, with glazed eyes, you whisper, “Yes, Mark. Yes.”

He doesn’t make you beg twice. One hand tears the remaining suit away like tissue paper, his cock springing free—thick, veiny, and already leaking. The flushed tip bobs against your thigh, leaving a sticky trail as your breath catches.

“Fuck, Y/N—” Mark’s voice breaks as he strokes himself, his wild eyes drinking in every tremble of your body. “You have no idea how long I’ve waited for this. How many nights I dreamed of this moment. You—here, with me again.” His breath shudders, his grip tightening. “Had to find you. Had to make you mine again. I missed you. I missed you.”

His feverish rambling sends your pulse into overdrive, and for one fleeting moment, you wonder about that other life—what version of you could make a man this desperate, this feral with need? What was their relationship like? How did it end? How did Mark end up here, in your universe, searching for you? But then Mark’s strong hands are spreading your thighs wide, his body settling heavily between them, and all coherent thought evaporates in a rush of dizzying arousal.

Shit, shit—Mark Grayson, the boy you’ve been in love with since eighth grade, is about to fuck you. And shit—that thought alone makes your cock ache, your hole clench with anticipation, even as your mind screams that this isn’t your Mark. Your real Mark is probably fighting for his life somewhere. Maybe even dying. And here you are, letting his evil counterpart have you—willingly.

That makes you a horrible friend. You’re disgusting. A traitor. You’re giving in to every dirty fantasy you’ve ever had, every longing you’ve buried for years, all because this Mark—the wrong Mark—looks at you with the hunger you’ve always dreamed of seeing in your Mark’s eyes.

It’s sick. It’s twisted. You’ll never be able to look your Mark in the eye again. Guilt twists in your gut, heavy and suffocating.

You should stop.

You should have never let it go this far.

But then—

“Shh, baby, I got you,” this Mark whispers, shattering your spiraling thoughts. His voice is soft, almost reverent, as he lines himself up. “I got you. Gonna make you feel so good.”

You shiver, heat flushing your skin as his cock presses against your entrance, thick and hard and real. Instinctively, your legs wrap around his waist, locking behind him, pulling him in.

Mark groans, deep and satisfied, his fingers pressing into your thighs as he grins down at you.

“Fuck, yes,” he hums appreciatively, running possessive hands along your trembling thighs. “You’re so good, Y/N. So good.”

His fingers dig deep enough to leave bruises as he drinks down every gasp, every shudder of your oversensitive body like a man starved. And just when desperation coils in your gut—when the teasing pressure at your entrance becomes unbearable—Mark sheathes himself inside you in one brutal thrust.

“Fuck—!” your cry shatters the air as your body bows taut, back arching off the bed. The stretch burns, his thickness forcing you open in ways that make your vision whiten at the edges. “Fuck, fuck, fuck—”

He’s massive, painfully so. You can feel every ridge, every vein as your body struggles to accommodate him. It’s too much—you’re certain he’ll split you in two.

And yet... The fullness is intoxicating. It burns. It aches. But it also satisfies something deep within you, a primal need you hadn’t even realized was there. Tears prickle at your eyes as you clench the sheets, overwhelmed by the sheer reality of Mark Grayson buried inside you.

“Fuck...” Mark’s voice is guttural, dripping with satisfaction as he bottoms out. “God, you’re tight.” His hips grind deeper, wringing a broken whimper from your throat. “Taking me so perfect—fuck, you feel incredible. Like you were waiting just for me.”

And then, slowly, oh so fucking slowly, he begins to pull back out, dragging a wrecked moan from your lips. Your fingers clutch at his shoulders, desperate for something solid, something to hold onto as he sets a rhythm, each movement sending heat curling through your veins.

“That’s it,” Mark pants against your neck, his breath scalding as he inhales your scent like an addict. “Just like that… you’re perfect. Nobody else could take me like this.” His teeth graze your pulse point possessively. “Only you. Only mine.”

The next thrust is deeper than the last, stealing the breath from your lungs and making your hips jolt up instinctively, a surprised sound catching in your throat.

“Oh god, Mark,” you whine, nails digging into his back, voice breaking on a breathy moan. “Ah—ngh—fuck—”

The agonizingly slow drag of his cock has your vision swimming, pain and pleasure blurring into one overwhelming sensation. He’s so thick, so long, so heavy inside you. Every time he pushes in, it feels impossibly deeper, stretching you, filling you—until it makes your stomach bulge slightly, a small bump appearing in the flat plane of your abdomen.

Mark groans, eyes going wide, his hand settling at the base of your belly. “God, look at you,” he breathes, awed. His fingers press into the bulge, tracing the outline of himself inside you. “Fuck, I’m buried so deep in you. Right here, Y/N—you feel that? That’s me claiming you. Oh-ho-ho, goddamn, look what I do to you.”

His dark chuckle vibrates against your skin even as awe colors his voice. He punctuates each word with a punishing thrust, fingers digging into the visible outline of himself inside you like he wants to brand the shape of his possession into your flesh. And you can’t look away either—because holy shit, this is the first time you’ve ever felt anything like this, and it’s almost too much. Too intense. Too consuming.

Tears streak down your flushed cheeks as your legs tremble violently. The initial pain has melted into overwhelming pleasure, your body adjusting to his impossible size with desperate, shameful eagerness.

“More,” you rasp between gasps, arching up shamelessly. “Faster. Harder. Please—”

Mark chuckles darkly, burying his face in the crook of your neck, inhaling deep. “Yeah, sweetheart,” he murmurs, voice thick with hunger. “Gonna make you feel good. Gonna ruin you for anyone else.”

The dark promise in his words should terrify you. Instead, it sends another pulse of white-hot pleasure straight to your aching cock. Then he moves—harder, faster—tearing the air from your lungs, leaving you breathless and reeling. Your body clenches around him, every nerve alight as a broken whimper escapes your lips.

“Mark—Mark—” you mumble his name between gasps, unable to form anything else. “Mark, ah—Mark—mmh—fuck—”

A sharp cry rips from your throat as Mark shifts his angle, hitting a spot inside you that sends a violent shudder through your entire body. Heat surges down your spine, forcing you to arch off the bed, toes curling, every nerve alight with raw, electric pleasure.

“Fuck! There! Mark—ngh—fuck!” you moan, biting down on your lip so hard you taste the faint tang of blood. Mark growls, his movements deep and unrelenting, each thrust pressing you further into the mattress. The bed creaks beneath the force, your skin burning where his grip tightens. “There! Keep going! Fuck, it feels so good—Mark!”

Then—through the haze of heat, through the sinful sounds of skin against skin, of your wrecked moans and his low, animalistic groans—something intrudes. A sharp, buzzing vibration. Your ringtone.

Your eyes flutter open, hazy and unfocused, flickering toward your desk—just a few feet away, where Mark tossed your phone. You’re aware the screen glows, the sound ringing in the background, before another brutal thrust wipes all coherent thought away. Let it ring. Nothing matters except the way Mark’s splitting you apart, remaking you as his with every snap of his hips.

The phone rings and rings… then stops. And you don’t even notice when it goes silent, too preoccupied with the drag of Mark’s cock inside you, the way your nails sink into the broad expanse of his back, leaving behind deep, angry marks.

“Perfect,” Mark rasps against your ear, his voice wrecked and reverent, “Taking me so fucking good, Y/N. Made for this. Made for me.”

Your thighs shake violently around him, toes curling as his filthy praise reduces you to nothing but lustful moans and pleading whimpers.

Then—your phone starts ringing again.

This time, Mark notices.

He stills inside you with a low snarl, his body tensing as he straightens slightly, casting an annoyed glance toward the device. But when he reaches for it—his cock still buried deep inside you, making you whimper—his expression darkens with wicked amusement as he reads the caller ID.

“Well, well,” he purrs, looming over you once more, planting one hand beside your head while the other dangles the phone just inches from your flushed, dazed face. “Take a look at this.”

Your stomach drops at the familiar name flashing on screen. It’s Mark—your Mark—calling you.

“Should we answer it, baby?” he muses, tilting his head as his lips curl into a smirk. “Let him hear what you sound like when you’re properly fucked?”

“No—!” you gasp, wrecked and breathless, your heart hammering against your ribs as you reach for the phone, desperate to snatch it from his grasp. “Mark—”

But he’s quicker.

“Ah, ah,” he tuts, lifting a single finger in mock reprimand, effortlessly keeping the phone out of reach. His other hand tightens around your hip, keeping you pinned. “You need to get your shit together first, Y/N. Wouldn’t want him to know what you’re doing, now would you?” His eyes gleam with wicked delight. “With that pornographic little voice of yours—so wrecked, so needy for my cock…” He leans in, his breath fanning over your ear. “I bet he’d figure it out immediately.”

A shudder rips through you.

Your vision blurs—tears welling at the edges, cold fear twisting deep in your gut. But worse—worse—is the way your body betrays you. The way you clench around him involuntarily at the thought. At the sheer humiliation of it.

Of your Mark listening on the other end. Unaware. Oblivious. As his variant fucks and ruins you.

“See? I know you,” he murmurs, his voice syrup-thick with satisfaction as he strokes your cheek with unnerving tenderness. His free hand cups your face, his thumb dragging over your lips. “I know exactly what kind of fucked-up little thing you are.”

His grin widens as he watches your lips tremble, your breath coming in quick, uneven pants.

“I’m glad you’re the same here as you were in my universe, Y/N. I adore you like this.” Then, his tone dips lower, velvet wrapped around something dangerous. “Now—try to keep him distracted while I take my time with you, yeah?”

Before you can react, he thrusts—sharp and sudden—just once, but it’s enough to steal the air from your lungs. A strangled gasp escapes you, body reacting on instinct, pulse hammering as he stills once more.

Mark leans in, his breath hot against your parted lips, his amusement dripping with warning. “Otherwise, he’ll keep calling,” he murmurs. “And I don’t want him interrupting us.”

Your stomach twists in knots of anticipation and dread. The phone is still ringing, still just out of reach—Mark’s name flashing on the screen, a second away from being answered. And all the while, this Mark remains inside you—hot, solid, pressing deeper with each second of silence.

“Okay...” you breathe, forcing air into your lungs. “Okay.”

Mark’s smirk turns predatory as he brushes a featherlight kiss to your nose before tapping the answer button, offering you the phone back—and as soon as you grab it and press it to your ear, he immediately resumes his slow, deliberate thrusts that make your toes curl.

“Y/N? Y/N!” The real Mark’s voice—familiar, concerned, kind—crackles through the speaker. He sounds breathless, frantic. “Are you okay? You called and I couldn’t answer but then—but then I called back and you didn’t pick up, and I’m—I’m worried—”

You squeeze your eyes shut, teeth sinking into your lip, fighting so hard to keep quiet. But the Mark above you doesn’t make it easy, his hips moving with cruel precision, his smirk deepening as he watches you struggle.

“…Y/N?”

“I’m here,” you choke out, voice miraculously steady despite the way your body arches into each thrust. The not-yours-Mark’s eyes glint with dark amusement as he increases his pace. “I’m... okay.”

Your voice wavers. You can’t help it. A shaky sigh escapes when he ducks his head to nip at your throat, his hot breath raising goosebumps across your oversensitive skin.

“Thank God,” your actual Mark exhales, the relief in his voice almost painful to hear. “Listen, Cecil just— he lost track of a variant. Said he was heading your way, Y/N.”

The not-yours-Mark stills inside you, his expression shifting to something dangerously intrigued. “Oh?” he murmurs against your pulse.

“Y-yeah?” you blurt too loudly, praying the real Mark didn’t hear him.

Your fingers dig into the sheets as the not-yours-Mark begins moving again with renewed purpose, each thrust calculated to wring helpless sounds from your throat while you struggle to keep your breathing even.

“Yeah,” your actual Mark replies through the phone, his voice strained. “I’ll—I’ll come your way. Or the GDA will pick you up, but—it’s dangerous to stay in your apartment! Please, just—just leave. Right now.”

You choke back another gasp, barely holding yourself together. No—you can’t let Mark come here. You can’t let the GDA get involved either. The humiliation would be unbearable—agents witnessing you like this, being taken apart by the same monster who probably leveled cities and slaughtered thousands before claiming you in your own bed.

“No!” you blurt out, voice cracking under the weight of too many emotions. “No, nngh, fuck—you can’t!”

You’re losing control. This Mark—the wrong Mark—is hitting your prostate with every brutal thrust, his teeth sinking into that sensitive spot on your neck while his fingers twist your nipples mercilessly. Stars explode behind your eyelids as another lewd groan escapes you. Virgin or not, there’s no way you could stay quiet under this assault. You realize with dawning horror that he doesn’t want you quiet—he wants you loud, to moan, to let your Mark hear you. To let him know.

That yeah—he’s here.

And yeah—he’s fucking you.

For a moment, there’s only silence on the other end of the call.

Then finally, Mark speaks again, slower this time. “This—this isn’t negotiable, Y/N,” he says, though there’s something off—a hesitation, a shift in his tone as your breath stutters audibly. “Are you… okay?”

No. You’re not okay. You’re overwhelmed, wrecked by pleasure more intense than anything you’ve ever known, losing your virginity to a twisted version of the man you love. Hot tears of shame spill down your cheeks as a sob tears from your throat.

“...Y/N?” Mark’s voice sounds distant now. You can barely hear him over the rush of blood in your ears, over the slick sound of skin meeting skin, over the obscene, broken whimpers falling from your lips.

“Mmmh, fuck,” you gasp as the pressure builds unbearably inside you. “Fuck—Mark—”

“That’s it, baby,” not-your-Mark whispers in your ear, his voice dripping with dark satisfaction. “You wanna come, don’t you? Wanna scream my name?”

The dam breaks. “Yes! Fuck, yes, yes!” Your voice shatters with each punishing thrust. Dignity forgotten, you arch desperately against him, meeting every movement as you beg mindlessly. “Mark—I can’t—oh god, please, please...!”

The line goes silent for an agonizing moment, the static crackle carrying more weight than words ever could. You squeeze your eyes shut, shame and guilt and disgust warring with the pleasure coiling tight in your belly—but it’s too late now. Far too late.

“Y/N...?” his voice comes through the receiver—your Mark’s voice—strangled and low, thick with realization.

Your stomach drops. He knows. Oh god, he knows. He fucking knows.

Not-your-Mark lets out a pleased hum against your neck, his fingers lazily plucking the phone from your trembling hand while his hips snap forward, forcing a needy moan from your lips. The wet sound of skin on skin is unmistakable. There’s no way your Mark could mistake what’s happening.

Not-your-Mark’s eyes glint with something wicked as he presses the phone to his ear, smirking.

“Too late, dickhead,” he says, just as breathless as you, his voice dripping with smug victory as he punctuates each word with another brutal thrust. “He’s already mine.”

Mark’s furious roar bursts through the speaker. “You—!” you close your eyes, mortified, tears falling down your cheeks because this is the moment Mark realizes you’re a horrible friend. “I’LL FUCKING KILL YO—”

But the sound is cut off with a sickening crunch as not-your-Mark’s fingers tighten, phone shattering, fragments falling like dust.

“Oops,” he pouts mockingly, tilting his head with feigned innocence before his expression darkens. His hand snakes around your throat, not tight enough to hurt but firm enough to claim. “Now where were we, sweetheart?”

When he slams back into you, you arch off the bed with a broken scream, your legs spreading wider of their own volition. He chuckles darkly, hands sliding under your thighs to fold you nearly in half, opening you up so completely that each thrust punches the air from your lungs.

“Fuck,” he growls, pace turning erratic as his control fractures. “Look at you—taking me so perfect. Tell me. Tell me how much you love this. How much you love taking my cock.”

“I love it,” you gasp without thought, your mind obliterated by pleasure. “Fuck—I love it. I love you.”

A deep, guttural moan tears from his throat, his grip on you tightening as he nods frantically. “Yeah? Love me? Fuck— I love you too, baby. I love you so fucking much.”

And you know he’s not your Mark. You know your real Mark is probably flying at full speed right now, minutes, or even seconds from bursting through your window. But Christ—hearing those words, in Mark’s voice, from his lips, with his face twisted in raw, desperate worship—it makes you dizzy. It makes you happy.

“I love you,” you say again, fingers twisting into his dark hair, dragging him down until your panting mouths brush. “I love you. Always have—fuck—since—since before you even got your powers, Mark!”

“Yeah?”

“Yes! Ah—fuck, yes!” The words dissolve into moans as you kiss the corner of his mouth, your lips sliding messily against his. “When you were such--a nerd! Loved you since we were kids. Love you now. I always will—”

He groans, swallowing your words with a feverish kiss, his hands squeezing your cheeks until your mouth falls open, surrendering completely. Tongues tangle, breath mingles, and he moans right into you—

“I love—” he pants, his movements growing erratic. “I love you, Y/N. Fuck—Gonna take you home with me. Gonna keep you forever. Steal you from that idiot...make him see what he threw away—”

Then—suddenly—his hand wraps around your cock.

It’s been untouched this entire time, leaking wildly against your stomach, and the moment his fingers curl around it, a sharp, broken whimper escapes you. Your hips jerk helplessly, legs trembling as pleasure rips through you.

“Fuuuuck,” you sob, shuddering against him. “Don’t stop—don’t stop. I’m gonna—”

“I got you, baby,” he growls, stroking you faster, fucking into you harder. “Gonna make you feel so fucking good. Gonna take you away. Gonna own you!”

And God help you—his words don’t sound like threats when you’re drowning in white-hot ecstasy. In this moment, you’d let him drag you through dimensions, would beg him to claim you completely—because he wants you. He loves you. He craves you in a way you’ve always ached to be craved. And right now—you’d let him take you. You’d let him do whatever the fuck he wanted.

“Ah—ah, Mark—” Your body locks up, stomach tightening, hole clenching around him as the pressure on your cock becomes unbearable. “I’m gonna—fuck—I’m gonna come—”

“Yeah, baby, let it out,” he growls against your lips, his hand working your cock in perfect sync with his punishing thrusts. “Come for me. Now.”

You shatter with a strangled scream, body jerking violently as you spill across your stomach in thick, hot stripes. Your vision whites out, every muscle locking and spasming as pleasure tears through.

Mark groans like a man possessed, his thrusts faltering as your hole flutters and clenches around him. “Fuck—fuck—” He slams into you one final time, burying himself deep, and then he’s coming too, hot and thick, filling you to the brim. His grip tightens as he grinds himself deeper, prolonging every last spurt, wringing every aftershock from you until you’re trembling and spent beneath him.

You can’t move. Can’t speak. All you can do is lie there, trembling, as he keeps pumping into you, dragging out your orgasm until you’re sobbing from oversensitivity. His hips grind against yours, forcing every last drop into you like he’s determined to make sure you remember this.

When he finally pulls out, you whimper at the loss, your body limp and wrecked. Sweat and come cling to your skin, your chest heaving as aftershocks wrack through you. Every inch of you is marked—bruises blooming where his fingers, his teeth, his lips claimed you.

You barely register the mattress dipping as he lays beside you, his arms wrapping around your exhausted frame. A soft, lingering kiss presses to your forehead, his voice a soothing murmur against your damp skin.

“Shh, shh, Y/N,” his fingers trace lazy circles against your back. “Go to sleep. I’ll take care of everything.”

Even in your dazed, post-orgasmic haze, you understand what “everything” means.

It means your Mark—your universe’s Mark—is on his way. It means a fight is inevitable. It means blood, destruction, the clash of two forces that look the same but could never be. And when that moment comes, you’ll have to face him—face the shame that will devour you whole.

Because how dare you?

How dare you moan his name for someone else? Whisper desperate I love yous to the wrong version of him? Come undone beneath a man who wears his face but isn’t him?

And after you told him it was fine—that you were fine—staying just friends. After you swallowed every aching, desperate feeling just to keep him close. But in the end, you gave in. You let temptation pull you under. You let yourself have him—or the closest thing to him. And now, there’s no taking it back.

You know you’re wrong.

You know time is running out.

And you know that when he says he’ll take care of everything, this Mark intends to kill your Mark—just as your Mark wants to kill him.

But your body betrays you—mind foggy, muscles lax with satisfaction, the afterglow pulling you under. As consciousness fades, this not-quite-Mark draws you closer, pressing a gentle kiss to the corner of your mouth. His breathing steadies, his solid frame surrounding you in deceptive safety.

(And vaguely, you think about your Mark. About how he’s been pulling away from you, slowly but surely. How, ever since you confessed your feelings and ruined everything, he hasn’t looked at you the same.

“I promise I’ll tell you,” he’d say, a week ago, his eyes avoiding yours in a way that pains you. “I promise I’ll tell you the truth. All of it. And—”

Then he’d looked up, and something in his gaze pinned you there—fervent, almost feverish.

“I’ll—” he’d stop himself, cheeks coloring faintly, and yet he wouldn’t relent his steady gaze. ”I’ll tell you the reason I’ve been acting like such an asshole to you. And I hope...you can forgive me after.”

“Why not now?” you’d ask, puzzled, fingers curling into your palms. ”Why not when I’m asking you, Mark? Right here, and right now.”

He’d flinch, his eyes closing for a fleeting second before opening them again. ”Just—gimme one more week,” he’d rasped. “One more week and—I promise I’ll tell you everything. I’ll—confess everything.”

And as he’d turn around, his broad back to you as he’d take off—not before glancing at you with troubled eyes, an intensity in his eyes you can’t quite place—you’d only guess he’s gonna say he hates you. That he’s gonna say, now once and for all, he can no longer be your friend.

And how you should’ve kept your heart locked tight, your love buried deep, just so you could keep him close. How you should’ve never, ever opened your big mouth and let your feelings spill out.

But you did, and now nothing’s the same.)

“I’ll take care of it,” Mark murmurs again as you drift away, his voice a dark promise. “Never gonna lose you again. Never.”

The last thing you register before sleep claims you is the steady rhythm of his heart beneath your cheek.

And in the final flicker of consciousness, a single thought drifts through your mind— You wished Mark had told you the reason.

You cross your arms, irritation prickling under your skin. “It’s just a bit of saliva, Mark. And it’s mixed with, like, 80% water. You literally can’t taste it.”

He pouts, eyebrows knitting together stubbornly. “Still…”

“You know what?” you snap, cheeks flushing—partly from anger, partly from embarrassment. It isn’t your fault your healing powers work this way. “Fine. Don’t drink it. Enjoy waiting a month for your ribs to heal naturally. I’ll let Cecil know you’re benched until further notice.”

Before he can protest, you snatch the cup from his hand and down it yourself, locking eyes with him in a silent challenge. It tastes exactly like water. No big deal. Mark is being ridiculous. When you finish, you set the cup down with a shrug, feeling refreshed and perfectly fine.

“There,” you say curtly, grabbing your things along with the report of his vitals. “Now suffer alone.”

“Wait, wait—!” Mark jerks forward, wincing as his injuries protest the sudden movement. “You can’t just leave! I—I need to heal fast! I can’t be sidelined for a month!”

“Oooh,” you drawl, mocking. “Well, that was the last one left. Too bad, Invincible—oh, wait. Guess you’re not so invincible right now, huh? Stuck in a hospital bed, bruised up, with broken bones…”

You shrug, a teasing smile tugging at your lips as you turn for the door again. 

Mark’s face falls. “Wait. You’re joking. There’s no more?” 

“Nope,” you say, popping the p, watching as his eyes widen in panic. “I came here to make more stock for Cecil. Felt bad for you, so I whipped up one on the spot—but hey, you didn’t even want it, Grayson.” 

“Wait, Y/N—” he scrambles, voice turning desperate. “C’mon, I’m sorry, okay? I need that Revitalizer! I need to keep training! Please? Please?” 

You pause at the door, glancing over your shoulder with a slow, unimpressed stare. 

“So now you want my spit—the one that was ‘disgusting’ literally ten seconds ago?” You arch a brow. “Yeah, no. Have fun with the crutches. Later, Grayson.” 

Mark’s desperation instantly shifts to irritation. “Hey! You can’t just leave! This is your job! So do your job, Y/N, or—or else!”

You stop again, a brow twitching. “Or else… what, exactly?” 

Mark fumbles, his bravado faltering. “Or else I… I dunno—I’ll tell Cecil to fire you or something?” 

You let out a dry, humorless laugh. “Oh, sure. Because firing me, the guy who keeps all his damn heroes—including you—on the field, is such a brilliant idea.” 

Mark crosses his arms, smirking like he’s found a loophole. “Well, you’re not exactly keeping me on the field now, are you? And by the way, I’m his best guy. Cecil’s not gonna be happy you’re refusing to heal his best guy.”

You press your lips into a thin line, irritation bubbling in your chest as Mark’s cocky, self-assured smirk grates on your last nerve. He was already pushing it, eating up time you didn’t have, and now he was really pissing you off. 

But there was no more stock left. Making a new batch would take at least ten more minutes—minutes you couldn’t spare. What could you do?

Then a dark, petty idea slithers into your mind.

“Fine,” you mutter, shutting the door and stepping back into the room. “If you insist.” 

With swift strides, you move toward him, grabbing his face between your hands, fingers pressing into his cheeks just enough to squish them together. His smug expression falters, confusion flickering across his face—just as you lean in and kiss him. Full on the mouth. Tongue and all. 

Mark makes a startled noise in the back of his throat, his whole body jerking as your tongue slips past his parted lips, brushing against his demandingly. You don’t give him a chance to react, to pull away, to breathe—you just press in deeper, holding him still, making sure he gets a direct dose of your healing power. 

Because, yes, your saliva contains the ability to heal. That’s why you dilute it in water—so heroes can take it without things getting… weird. It works. It’s enough, and really, Cecil would never ask for more from you.

But this—this direct contact, exchanging spit with Mark, making sure he’s drinking it straight from your mouth instead of a diluted version—is the raw, unfiltered version of your power. The kind that knits bone and flesh back together in seconds.

And if Mark was that desperate for it, then here. Take it. 

His breath hitches, throat bobbing as he instinctively swallows the saliva between your entwined tongues. Under your fingers, you feel the swollen bruises on his face smooth out, the lingering pain vanishing in an instant. Only then do you finally break the kiss, a faint line of spit still connecting you both before it snaps. 

“There. Happy?” you pull away completely, scowling as you wipe your mouth with the back of your hand. “You’re dismissed. Go home.” 

“W-what?” Mark’s mouth opens, then closes. A flush creeps up his neck. “I—you—what the…?” 

You look away, your own face heating up. “This is the last time I’m doing this. Don’t tell anyone—” your voice drops to a dangerous whisper “—or I’ll kill you.”

And with that, you turn on your heel and walk out, leaving a spluttering, red-faced Mark behind.

The second time it happens is while you’re both on the field.

Mark is in the air, fighting off the bad guys. You’re on the ground, checking on injured civilians and offering help. 

You’re not really paying attention to what Invincible or the other heroes are doing. Your focus is entirely on offering assistance, stabilizing wounds, and evacuating as many people as you can from the area. You don’t worry. You never worry. Not when it comes to them—and especially not when it comes to Mark Grayson.

The boy’s basically a force of nature wrapped in a spandex suit. Inexperienced, sure. A little reckless at times, yeah. But strong, strong. The kind of strength that makes his skin impenetrable, his body durable, and his raw power overwhelming.  The kind of strength that makes you believe, really believe, in corny hero names like invincible.

That’s why you’re so surprised when he suddenly comes crashing down from the sky, his body slamming into the asphalt like a meteor, carving a trail of shattered pavement before slamming through the side of a building. Concrete buckles. Steel bends. The whole structure groans under the impact.

One second passes. Then two. Three. Ten.

And he doesn’t get up.

Panic grips you, and you’re already sprinting before you realize it.

“Invincible?!” you call, voice cutting through the air as you swipe the dust from your face and enter through the whole he made. “Shit—Invincible?” 

The building creaks ominously around you, but you push forward until—

A low groan echoes from the rubble.

There, buried in a mess of rubble and twisted metal, lies Mark.

Your eyes narrow, instincts kicking in as you assess his condition with clinical precision while carefully making your way over. He’s in bad shape—bruises swelling across his face, blood smearing his skin, breaths ragged and uneven, and one of his arms is bent at an angle it definitely shouldn’t be.

The sight twists something sharp and awful in your chest, but you bury the feeling beneath your professional mask. You can’t afford to panic.

“Invincible?” you mutter, kneeling beside him and brushing debris off his chest and shoulders. No answer. Just a weak, pained sound—barely more than a groan. “Mark?” you try again, softer now, a hand slipping behind his head to lift it gently. He lets out another weak noise, eyes fluttering, but there’s no real awareness behind them.

No, you realize quickly, the Revitalizer won’t cut it. Not for this. Not fast enough. Mark’s breathing is shallow and quickening—too quick, too sharp. Collapsed lung, maybe. Add that to the concussion and the internal injuries you’re certain he’s hiding under the surface. The diluted solution of your power works on minor injuries and fractures, but this is beyond that.

You pause, weighing your options, the conflict mounting in your chest. Outside, the battle still rages—the heroes definitely need Mark’s help if the panic and screams are anything to go by.

Which means this calls for a direct transfer. Maximum potency. And you know exactly what that means.

Your jaw clenches.

“Goddammit, Grayson,” you whisper to his barely-conscious form, already making the decision. “People need you out there.”

The building groans and creaks ominously above you, dust raining from the ceiling. But you pay no mind, heart hammering.

One hand slides behind his neck, the other tilts his chin up. “Sorry for this,” you mutter, even though you doubt he can hear you. Your gaze flickers briefly to his lips, the sudden thought making your stomach churn. “Trust me, man, I don’t want this more than you do. So when you wake up… no hard feelings, okay?”

And then, without another second of hesitation, you’re sealing your mouth over his. Your tongue pushes past his lips, shoving the raw, undiluted potency of your power straight into him. It’s messy, desperate, laced with the taste of blood and grit. Mark jolts under you, a weak groan trapped between your mouths—but you don’t stop. You count the seconds in your head, focusing on the transfer, making sure he gets enough. Enough to mend everything.

Then you feel it—the sharp, deep breath he takes as his lung reinflates. His ribs shifting under your palm, bones snapping back into place. His arm realigning itself with a sickening crack.

Then, the soft gasp you swallow when his consciousness starts to return.

Mark makes a confused noise, his tongue brushing against yours, clumsy and startled. You freeze, heat rushing to your cheeks in a mix of embarrassment and shock, and pull back immediately.

“Y/N...?” Mark’s voice is hoarse, and it makes your skin burn. “What... did you just—?”

You glance away, quickly wiping your mouth with the back of your hand, trying to hide the flush creeping up your neck. “Can you stand?”

Mark blinks, still dazed but healed, already flexing his newly-mended arm. “I… yeah. Yeah, I think—”

“Good,” you snap, grabbing his arm and hauling him upright. “Then move.”

But Mark just stands there, staring down at himself—then at you—then back at himself. And then, with a breathless laugh, he beams.

“Oh-ho-ho, I feel amazing!” he exclaims. “I feel great! Like, better than great!”

To prove it, he hovers a foot off the ground, spinning in a gleeful pirouette like a complete idiot. You fold your arms, glaring at him as he flexes his muscles and stretches, putting on a ridiculous display of his newfound energy.

Then the building groans again—a low, warning sound that cracks through the air.

Mark halts mid-spin, looking up at the ceiling. “That... doesn’t sound good.”

“Yeah, no shit,” you mutter, eyeing the unstable column just behind him. “We better go before—”

You don’t get to finish.

The ceiling gives out with a thunderous crack, and before your brain can catch up, Mark’s arms are around your waist, yanking you off the ground. Your eyes squeeze shut instinctively, arms wrapping tight around his neck as he blasts up through the collapsing hole he made when he crashed through earlier.

The world whips past you in a blur, and when you blink again, you’re outside. The building is falling behind you, collapsing in on itself, sending up a cloud of dust and debris that engulfs the area.

You both land a safe distance away, unscathed, while the building continues its dramatic descent.

“Aw, shit,” Mark mutters, pouting as he stares at the wreckage. “I did that?”

You hum, shooting him a side glance. “You’re lucky I evacuated that thing before it came down.”

Mark turns to look at you, his pout deepening like a sulky kid. But this time there’s a shift. He’s... uncomfortably close. Closer than you realized. You can feel his breath against your cheek, the rise and fall of his chest syncing with yours. That’s when you realize—his hands are still curled loosely around your waist. And your arms are still looped around his shoulders.

Both of you seem to notice at the same time.

Mark drops his arms like he’s been burned, quickly turning away to scratch the back of his neck and coughing into his hand. You shift your weight, eyes darting anywhere but him.

“Well—” his voice cracks, avoiding eye contact. “Thanks for, uh. The whole. You know. The thing with the—” he makes a vague gesture toward his mouth.

“Sure,” you reply, keeping your tone as neutral as possible. “Anytime.”

A mutual, full-body cringe.

The moment is mercifully shattered by Immortal calling out to Mark, urging him to get back in the fight.

Mark jolts like he’s been electrocuted. “Right! Yeah. Duty calls. Gotta—” he gestures weakly toward the fight, already floating backward. “So, uh. Thanks. Again. For the—”

“Go,” you interrupt, already turning toward a group of civilians still trapped in the area.

He throws you a final awkward half-wave, then rockets away—but not fast enough to hide the way his ears burn crimson. You watch him fly away, cheeks heating up, too.

The third time it happens, Mark isn’t bleeding, broken, or even remotely in danger.

No—he’s bored, crashing into your workspace at the GDA’s hospital wing, apparently done with his hero duties for the day—and, shockingly, with catching up with his college classes too. How he manages both, you have no clue. But here he is, picking up and poking around your things like a kid in a candy store.

“What does—”

“I swear to god,” you cut in sharply, patience already fraying, “if you ask one more time what anything in this lab does, I’ll gut you, Grayson.”

Mark pouts, carefully placing a large syringe back where he found it. “You’re no fun.”

“This isn’t a damn playground,” you mutter, returning your focus to the screen in front of you. “Now, unless you’ve got a severed limb or third-degree burns, get out.”

Mark flops into the nearest chair with a groan, legs sprawling like a petulant teenager. “Okay, fine. I’m here for, uh… a headache.”

“Oh no, how tragic,” you don’t even glance at him. “Take a pill.”

There’s silence.

An unnaturally long silence.

Long enough that you sigh and finally drag your gaze from the screen to find Mark staring at you with the most pathetic puppy-dog eyes you’ve ever seen.

“What,” you ask flatly.

Mark fidgets under your stare. “I just—” he sighs. “They take forever to kick in, okay?”

“So?” you arch a brow. “Suck it up, Invinci-boy. I’ve seen you take a hell of a lot more and never flinch once.”

“Yeah, but—” he glances away, wincing while pressing his fingers to his temple exaggeratedly. “This is a migraine. Like, brain-melting pain. Totally screwing with my focus.”

You narrow your eyes at him, suspicion flickering in your gaze. But as he keeps avoiding your eyes, fidgeting awkwardly, wincing every time he shifts—one hand pressed to his temple—you finally sigh and lean back in your chair.

“Fine,” you mutter.

Mark straightens up immediately, his eyes wide with surprise, cheeks flushing a faint pink. “Really?”

You blink at the sudden change in energy, head tilting. “Yeah…?” you say slowly, reaching into your desk drawer. Inside are several little Revitalizer cups—80% water, 20% your saliva. You grab one and set it in front of him with a soft thud. “Here. Thank me later. Cecil’s weirdly strict about the inventory—he hates wasting these on stupid things like a damn headache.”

Without waiting for a response, you turn back to your computer, resuming the work you’d been organizing before Mark decided to drop in unannounced.

Silence falls again—long, lingering, and just awkward enough to pull your attention back.

You turn to him, exhausted. “What now.”

Mark’s expression sours into a pout, his shoulders slumping as he stares down at the little cup, as if it’s the most disappointing thing he’s ever seen.

He sighs, closing his eyes before weakly reaching for the cup. “Nothing. It’s—nothing.”

Mark pops the lid off, staring at the clear liquid with exaggerated contemplation before drinking it all in one gulp. You watch silently, noting the way his throat moves as he swallows. Finally, Mark exhales, setting the empty cup on the desk.

Then he blinks, licking his lips with a curious hum. “Huh. Now that I’m really paying attention... it really does taste like nothing.”

“It tastes like water,” you point out distractedly, returning to your task.

“And water tastes like nothing,” Mark grumbles. He puts a hand to his chin, like he’s suddenly contemplating life’s biggest mysteries. “But it’s weird… did you know your spit has a taste?”

Your fingers freeze on the keyboard. Slowly, you turn your chair to face him fully. “Huh?”

“Yeah!” Mark springs up, suddenly animated, twirling the empty cup between his fingers. “It’s got this...I dunno, this flavor. Kinda—I can’t describe it.”

In all your years working with the GDA, through countless medical exams and power analyses, never—not once—has anyone mentioned your saliva having a flavor.

Your brows knit together in confusion. “You mean... like how everyone’s spit tastes?”

“No, no way,” Mark insists, shaking his head vigorously. “This is different. It’s like—” he waves his hands around, struggling to articulate. “Sort of... sweet? But not too much. More like—a feeling. But also a taste? And it lingers. You really can’t tell? It’s your spit after all.”

You tilt your head, gaze drifting in thought. “Not really.” Then your eyes narrow. “Can you taste your own spit? I don’t think so.”

“Yeah, fair,” he admits with a shrug, though his cheeks are now dusted with a light flush. He glances back at you, this time with a different kind of glint in his eye. “Hey—so. This thing—” he shakes the empty cup, “—hasn’t really worked yet.”

“It’s been, like, fifteen seconds—”

“The other method was instant.”

You glare. He looks away like he finds the ceiling lights particularly fascinating.

“The other method?” you repeat slowly, raising an eyebrow. “You want me to kiss your migraine goodbye or something?”

Mark chokes on air, spluttering. “No, no, I didn't say that! I just want, uh, I want—I just want to know what your spit tastes like!”

A long beat.

“For science!” he rushes to add, flustered beyond salvation. “I wouldn’t want to kiss you! I mean, ew, eugh, no, I—that’s—I don’t—”

You hum thoughtfully, tuning out the rest of his babbling. The scientific implications are intriguing. Flavor? In your saliva? That’s a whole new variable. Could you isolate whatever this is? If there’s something in the taste that links to your power’s effectiveness, maybe you can concentrate it, increase the strength of each Revitalizer beyond the current 20% dilution. If Mark’s being honest about all this… it could be groundbreaking.

“—and kissing dudes? Not my thing! Not that there’s anything wrong with that! I just—”

“Alright,” you cut in sharply, standing up from your side of the desk. “C’mere.”

Mark’s mouth snaps shut with an audible click. “Hmm?”

“Come here,” you repeat, already grabbing a notepad. “You’re going to describe this supposed ‘flavor’ in exact detail.”

Mark’s mouth hangs open, eyes wide in disbelief, and for the first time in the last five minutes—he’s finally silent.

“Wait—so you’re saying—does this mean we’re…?”

You roll your eyes. “What do you think, Grayson? Unless you’ve suddenly changed your mind.”

Mark scrambles to his feet so fast he almost knocks over his chair. “No! I mean—yeah, I want to,” he says, and you catch the subtle bob of his Adam’s apple as he adds, weaker, “for science.”

“For science,” you echo with a slow nod, watching him as he rounds the desk with nervous, rigid movements. “Then I need you to be very attentive, okay, Mark?”

“Sure,” he says quickly, voice lower now, eyes flicking over your face before landing—and staying—on your lips. “Super. Attentive. So... how exactly do we—”

You reach for his chin, thumb pressing lightly on his lower lip. “Shh.”

He goes still, sucking in a sharp breath.

Then you guide him in, sliding your hand to the back of his head as you draw him into a kiss. Mark comes willingly, lips already parted. The moment your mouths meet—warm, tentative, tongues brushing in a slick, electric glide—it sends a jolt through you both. A quiet groan rumbles from deep in his throat as his body melts into yours, tension giving way to something softer, needier. You take a single step back from the force of it, your breath catching, but neither of you pulls away.

You move slowly, letting your tongue sweep languidly against his, the taste of him mingling with your own as saliva slicks between your mouths. As the seconds pass, Mark’s movements grow more eager, his confidence rising with the heat between you. Then, without warning, he licks and sucks on your tongue in a way that makes your whole body shiver, goosebumps scattering across your skin.

“Mmh,” you groan softly into the kiss, one hand drifting to his chest—his firm, toned, distractingly solid chest—and you try to pull back just enough to catch your breath.

But Mark whines, his grip tightening, pulling you back in.

“Mmph?!” you mutter, muffled and breathless. 

His hands, which had been awkwardly hanging by his sides, finally move, fingers sliding up to your hips. His touch is hesitant at first, then turns urgent, twitching with anticipation. Your heart pounds in your chest, lungs burning from the lack of air, as his lips move hungrily against yours. His grip tightens, drawing you impossibly closer, until you feel every inch of him pressed against you—the steady beat of his heart syncing with your own.

Hell, you can even feel the bob of his throat as he drinks from you.

When you finally wrench your mouth free, a glistening thread of saliva connects you for one obscene second before it snaps. Mark chases after your lips like a man starved, but you press a cautious hand against his mouth.

“Grayson,” you pant, “that’s enough. I need—data.”

Mark blinks, dazed. “Huh?”

“The flavor,” you remind him, voice rougher than you’d intended. “The point was to, y’know, describe it.”

His pupils are blown wide, lips parted and panting. He looks confused for a second—then realization dawns across his face.

“Right! Right. It’s, uh—” his tongue darts out, licking his swollen lips. “Definitely... sweet. But like, honey-sweet? Only—more subtle. I think—” he clears his throat, voice rough, “I think I might need... further testing. For accuracy.”

“Accuracy,” you repeat flatly, raising a brow.

At this point, you seriously doubt he came here out of curiosity about the taste of your spit, or that he gave a damn about the ‘science’, or that he ever had a migraine to begin with. That realization makes your cheeks burn hot, your heart thudding harder.

Still, you pull him closer, noses brushing. “Well,” you murmur, “it can’t be helped, then. We do need to be extra accurate. So pay attention, yeah?”

His breath hitches, forehead resting against yours as his fingers flex on your hips. “Yeah…” he breathes. “I’ll be super attent—”

You cut him off with another kiss.

Science demands repeat trials, after all.

It keeps happening as the weeks go by, for reasons you can’t quite understand.

If Mark’s seriously injured, it’s become your go-to method—because, really, the world can’t afford to have its strongest hero benched for weeks just waiting to heal. If he’s just feeling sore or tired, it’s your method too—because otherwise, he’ll whine and mope and follow you around all day. And if he says he just needs an energy boost, claiming your powers make him feel like he could fly to another universe and back, then yeah, it’s your method again—because he won’t stop asking until you finally snap and kiss him just to shut him up.

But this time, it’s not Mark who’s critically injured.

It’s Rex.

Somehow, he survived a bullet to the head, severe blood loss, and an amputated hand. And even now, after all the surgeries and treatments, still confined to a hospital bed, he has the nerve to act cocky and cheerful.

“C’moooon,” Rex groans the second you step into his room to check his vitals. “You’re my only hope here, Y/N. I can’t take another day in this prison—I’ve read every magazine Eve brought me twice, and I’m dying of boredom.”

“No,” you reply, not even glancing up from his chart. “You know Cecil—”

“Cecil doesn’t let you waste your powers like this because it’s ‘pointless,’ because he’s got it all covered, blah blah blah,” Rex mocks, rolling his bloodshot eyes. “I just don’t get why we have a healer hero who’s not actually healing me, y’know?”

“You are healed,” you mutter, irritation seeping into your voice. “You just need to stay in bed, rest, and let it be.”

Rex glares. “That’s not being healed. That’s the boring process of healing!” Then he squints at you, brows scrunched. “Why are you even here if you’re not gonna do your job?”

You scoff and drop the clipboard onto the end of the bed with a thud, fully turning to glare at him. “For your information, the only reason you’re still alive is because my Revitalizers kept your dumbass brain together while they rebuilt your skull.”

“Oh, those little cups?” Rex shrugs, unimpressed. “Yeah, they’re fine, but we both know there’s a way faster method to get me out of here.”

You press your lips into a tight line, brow twitching as he gives you a pointed look, waggling his eyebrows obnoxiously.

“No.”

He sighs dramatically. “C’moooon, Y/N. It’s not like I want to do it either, but if—”

You don’t hear the door slide open as you continue glaring at him.

“—a kiss is all it takes to fix me up, then get over here, baby,” Rex puckers his lips, closes his eyes, and starts making exaggerated smooching noises. “One little magical mouth-to-mouth and we’re both outta here. C’mon, lemme taste some of that miracle spit, mmh?”

You open your mouth to go off on Rex, but another voice cuts in, sharp and disbelieving.

“What.”

You whip your head around, glare softening instantly as your eyes land on Mark. He’s standing at the doorway in his civilian clothes, wide-eyed and frozen.

“Oh, hey Mark!” you say quickly, snatching the clipboard from Rex’s bed as you move to leave. “Came to visit Rex? Good luck—he’s extra insufferable today.”

“Hey!” Rex shouts, trying to prop himself up, waving his good arm like a flag of protest. “Don’t bail yet! What about our special healing session?”

You scoff, eyes still fixed forward. “Didn’t promise anything, asshole. Bye now.”

Mark doesn’t move. He stares at you, then at Rex, then back at you again with a look of wide-eyed panic and something suspiciously like betrayal. Just as you reach for the door, he suddenly jumps forward, blocking your path.

“Wait—!” his voice cracks, just slightly. “Do you—do you do that a lot?”

You blink, thrown. “Do what?”

Mark pouts, hesitating for a second before glancing over at Rex, who’s watching the scene unfold with curious eyes. Mark scowls, jaw tense, then puts both hands on your shoulders and pulls you close, not taking his eyes off Rex.

“You know…” he mutters, voice low and pointed, “that.”

Your still confused, baffled expression only makes Mark deflate. He sighs, looking away shyly, his cheeks turning pink, though his face is still tinged with a touch of disappointment.

“You know…” he mumbles again, quieter this time. “The  ‘special treatment.’ I didn’t know it was… Rex, too. I thought I was the only one you kisse—mmph!?”

Mark is swiftly silenced when you slap a hand over his mouth with an echoing clap, panic rising in your chest as it hits you halfway through what he’s talking about. But by then, it’s too late. You know it’s too late.

Five seconds of pure silence drag on.

Then, behind you, Rex gasps dramatically. “No way…” he whispers, eyes widening with dawning comprehension. And then, louder, “No way!”

You bury your face in your hands. “Oh my god…”

“Dr. Y/N!” Rex clutches his chest in mock outrage, his voice dripping with sarcasm. “Kissing your patients? That’s highly unprofessional! What would Cecil say if he knew? You know he hates wasting your power like that.”

“Oh my god,” you groan again, dragging your hands down your face, trying to hide from the embarrassment.

You whip around to glare at Mark, who shrinks under the intensity of your glare. But whatever you were about to say dies in your throat as Rex’s obnoxious cackling rings through the room, making your last nerve snap.

“So you are into special treatment, huh?” Rex laughs, eyes squeezed shut in amusement. “You were all high and mighty, denying it to me earlier. Well, look at you now!” Then he pauses, blinking in confusion, tilting his head. “Wait wait wait—so why does Invincible get the premium package, but I’m stuck with the watered-down version? That’s some bullshit favoritism! I don’t wanna be stuck here any longer! Hey! Do your job!”

Your jaw clenches. In one fluid motion, you throw the door open, grab Mark by the collar, and turn back to Rex with your most dangerous glare.

“Your treatment is called shutting the hell up.”

And with that, you drag Mark out of the room, slamming the door behind you with a resounding bang.

It’s silent at first—just the pounding of your heart and the flush burning across your cheeks. Embarrassment, dread, and the terrifying thought of Cecil ever finding out. You flinch just imagining the long, agonizing lecture he’d have locked and loaded if Rex opened his mouth. You have to make sure he doesn’t. And oh, you can think of several ways to ensure Rex’s silence—each more creatively painful than the last, all of them tempting—

“I’m sorry,” Mark says softly, cutting through your dark thoughts. “I didn’t—I didn’t realize there were... others.”

His voice cracks on the last word, and damn it all, when he looks up with those wounded puppy-dog eyes, your anger dissolves into mist.

You cup his face, forcing him to meet your gaze. “Mark. There are no ‘others.’” Your thumb brushes his cheekbone. “You seriously think I go around swapping spit with every hero who gets a paper cut?”

He winces. “No...”

“You think I’d kiss Rex of all people?”

His nose scrunches. “No.”

“Think that—” you pause, suddenly aware of the barely-there space between you. Of how your breaths mingle, how he’s leaning in without realizing it. Drawn to you like instinct. Like gravity. The next words come out softer than you mean them to. “That I’d do this with anyone but you?”

Mark’s eyes widen. His lips part—whether to answer or ask for clarification, you’ll never know, because you choose that moment to shut him up the only way that ever really works.

Closing the distance and kissing him.

Your lips crash together, deep and intense and hungry. His tongue meets yours halfway, practiced and eager, moving against your mouth in the way he’s learned you like. His arms wrap around you, hands slipping down your back, pulling you in closer, pressing you tight until there’s nothing left between you—not air, not space, not thought.

Your heart stutters and then races, excitement surging through your veins, raw and electric, leaving you lightheaded and weightless.

You hum into his mouth, slow and content, before finally pulling away—only to place one last, lingering peck to his lips.

Mark grins at you, cheeks flushed and eyes sparkling, that familiar giddiness and energy radiating from him—just like always when he feels the effect of your power. You can’t help but grin back, your chest warming at his boyish enthusiasm, before letting your forehead drop against his shoulder with a dramatic groan.

“Cecil’s gonna skin me alive if Rex blabs about this,” you mumble into the crook of Mark’s neck, feeling him shiver at your breath against his skin. “That little bastard’s definitely gonna hold this over me...”

Mark stays quiet for a long moment, his hands rubbing comforting circles on your back. His warmth and steady presence grounds you, but you can feel the slight tension in him—the guilt he’s trying to hide, stretching the silence longer than it should.

Then—

“What if...” he starts, hesitates, then tries again, voice low and unsure. “What if we just... dated?”

You blink, pulling back just enough to study his face. He’s red. Like, really red. Avoiding your gaze like it physically hurts him to meet your eyes. His throat bobs as he swallows, clearly nervous.

“I mean,” he rushes to explain, “Cecil can’t exactly lecture you about healing kisses if they’re just... regular boyfriend kisses, right?” He nods to himself, clearly pleased with this flawless logic. “Totally normal couple behavior. He can’t be mad if your power just happens to work that way…”

You stare at him for a few seconds, the weight of his words slowly sinking in. You notice the way his lips pout slightly, the hopeful look in his eyes, and how his fingers twitch lightly where they rest on your waist.

“Is this your subtle way of asking me out by pretending it’s not a big deal?” you ask, eyes sparkling with mischief. “Mark Grayson—oh, my hero, swooping in to do the favor of dating me so my boss doesn’t scold me for kissing one of his heroes an unnecessary number of times, just because he whines and cries like a total baby when I don’t?”

“Hey!” he protests, though there’s a grin tugging at the corner of his mouth. “It was justified! I was—y’know, in severe pain and everything…”

“Oh yeah?” you tease, tilting your head. “Like that time you said you needed extra energy and a good luck kiss before your Mars mission? Was that also you being in pain?”

“Well—that—I did get lucky from that, okay?” he stammers, cheeks flaring red. “And we succeeded, didn’t we? Thanks to your power enhancing my power.”

You can’t help but laugh, and soon he’s joining in, the sound warm and bright as you stay wrapped in each other’s arms. His laughter does funny things to your heartbeat, sends warmth blooming across your cheeks.

Then he sobers, his expression turning uncharacteristically shy. “So... is that a yes? To the... dating thing? Or…”

You smile softens, fingers brushing along his cheekbone with tenderness. “Well,” you murmur, eyes flickering to his lips, “we did skip a couple of steps, didn’t we?”

He huffs a breath of laughter, relaxing a bit. “Yeah… I guess we did.”

“Then why are you even asking, Grayson?” you murmur, lips brushing just barely against his as you lean in. His breath catches. “Of course I’ll date you.”

The kiss that follows is sweeter than any before it—slow and certain, filled with promises rather than excuses. Mark sighs into it, his arms tightening around you as if to say mine, finally mine.

You smile into the kiss, kissing him back with just as much eagerness, heart full, lips willing. You weren’t going anywhere.

It happens late at night, when Mark’s bruised, battered, and still trembling after a draining fight with Angstrom. The man hurt his mother, his little brother, and left him stranded in some godforsaken alternate universe. Mark’s body is shaky, yet he’s profoundly grateful to be back, grateful that your healing powers pulled his family together in minutes as soon as you learned of it. Grateful that you’re here now, with him tonight, wrapped in his arms, sharing a bed, and sharing kisses, because there’s nowhere else he’d rather be.

His kisses are desperate things—raw, needy, equal parts gratitude and desire, as if he’s trying to imprint the feel of you beneath his hands into his memory in case the universe decides to be cruel again.

“You know,” you murmur against his mouth when he pauses to breathe, “sometimes I think you like my powers more than me.”

Mark nips at your lower lip hard enough to draw a gasp, his hands sliding down your sides with possessive certainty.

“Course not,” he growls against your skin, his voice a low rumble that sends a shiver through you. His knee slots between yours as he rolls you gently onto your back. “I like you because it’s you.” His teeth graze your jaw, sending a shudder down your spine. “Because you’re stubborn.” A soft kiss to your pulse point. “And brilliant,” he adds, as his hands mold to the curve of your waist, fingers slipping beneath your shirt like he’s desperate for more contact. “And you taste like warmth.”

You hum, rolling your tongue against his in a slow, deliberate movement, a tease that leaves his breath hitched and ragged. The slick slide of your mouths against each other fills the quiet room, punctuated by Mark’s low, guttural groan when you suck gently on his tongue. His hips buck instinctively, pinning you deeper into the mattress. His body is warm and heavy and grounding. His hands roam, bolder now—urgent with the need to feel you, have you, anchor himself to you after almost losing everything.

And you let him.

Because you need it too.

“It wouldn’t matter anyway,” you whisper, breath hitching as you rock your hips up, seeking the delicious friction of his body against yours. A soft moan escapes his lips in response. “Even if you didn’t… like me back or whatever. I’d still let you have me. Give you anything you needed.”

Mark’s head snaps up.

“But I do like you,” he says, like it physically hurts him to think you’d believe otherwise. His hand slides down, purposeful and shaking just slightly, squeezing the growing bulge in your jeans. He swallows your gasp in a hungry kiss, lips messy and desperate. “Shit—I love you. I love you so much.”

The second the words escape him, Mark freezes. His whole body stiffens, eyes going wide with panic, like he hadn’t meant to say it at all. Like the confession yanked itself out of him before he could stop it. He pulls back, breath catching, lips parted  like he’s about to take it back or apologize—

But you just laugh softly, even as your heart slams against your ribs.

“I love you too, Grayson,” you murmur, pulling him back down by his collar, lips brushing lightly against his. “So don’t go getting yourself trapped in some alternate wasteland again, okay? You scared the shit out of me.”

Mark’s entire body sags with relief, the tension melting from his shoulders as he nuzzles into your touch like a starved man.

“Okay,” he says with a breathless laugh. “I’ll try. I mean—I’d really rather not be stuck in a version of reality where I’m not with you. Or where you don’t exist. That’d suck.”

You huff, amused and affectionate. “Then be more careful next time.” And before he gets a chance to reply, you seal your lips over his.

Mark groans against your mouth, his forehead pressing to yours as you tug him flush against you.

“Yeah,” he breathes between kisses, his voice rough with longing, his hips rolling against yours in a way that makes your vision blur. “Yeah, I’ll—mmph—be real careful next—”

The rest of his promise dissolves into the hungry press of lips and the slick slide of tongues—but the way his fingers lace through yours, squeezing like he’s afraid to let go, says everything he can’t put into words.

Then, of course, Mark ruins the moment.

He pulls back with a breathless chuckle, eyes locking with yours—dark, dilated, cheeks flushed, forehead damp with sweat, and chest rising and falling rapidly.

“Hey so—” he rolls his hips deliberately against yours, drawing twin groans as denim strains between you. “The way you keep kissing me like that?” Another teasing grind. “Think I might have enough energy to last all night and morning.” His lips brush your earlobe. “What d’you say, baby?”

You stare at him, heat blooming across your cheeks like fire—but you can’t help the smirk that creeps in.

“Well,” you say, playing along easily, “I don’t exactly have anything better to do the next couple days… Might as well give the world’s strongest hero all the healing treatment he needs.”

Mark’s answering kiss is filthy—all tongue and teeth and saliva, like he’s trying to drink every last drop of your power straight from the source.

Then he pulls back just enough to pant, “God, I love your powers.”

You grin cheekily. “Yeah, yeah. Just remember who they belong to.”

He huffs a laugh—and before you can say anything else, he steals another kiss. There’s nothing patient about the way Mark moves—like he’s got something to prove, and you’re the only one he wants to prove it to.

No matter—you’re happy to let him.