#libido increase

The cockroach skittered across Ryan's desk just as he opened his mouth to speak. He hesitated, watching its spindly legs pause on the edge of his chemistry notebook—right over the half-erased doodle of Lily's name he'd been absently tracing all afternoon. His throat felt lined with sandpaper.

“I have to tell you something.” The words came out too loud, making Lily jump slightly on his bed where she sat cross-legged, her knees pressing into the seams of his thrifted Star Wars comforter.

“You’re gay aren’t you?” she blurted, then immediately clapped a hand over her mouth, her bitten-down nails catching the yellow glow of his desk lamp. Ryan froze, his pulse hammering in a way that had nothing to do with the confession he’d practiced.

Because the truth was so much worse than that.

“No, it’s—I think I might be an incubus,” Ryan choked out, his fingers twitching against his thighs like they were trying to claw their way back into his pockets. Lily’s eyebrows shot up, her mouth falling open slightly before she burst into laughter—sharp, disbelieving barks that ricocheted off the cinderblock walls.

“All I think about is sex and doing dirty things.” Ryan’s voice cracked, his fingers digging into the worn fabric of his jeans. The confession hung between them, thick and ugly, as Lily’s laughter died abruptly. “Dude that’s just being a normal guy. Congratulations! Your balls finally dropped.”

Ryan shook his head violently. “No. Every single day.” His breath hitched as he forced the next words out. “And lately…people around me just start acting…weird.” The unspoken accusation hung between them—her showing up at his dorm unannounced tonight, her pupils dilated, her skin feverish whenever she leaned too close.

Lily’s scoff died halfway as she inhaled sharply. His scent—something musky and electric—hit her like a physical blow. She moaned before she could stop herself, her thighs pressing together involuntarily. Her cheeks burned crimson as she gripped the comforter, her knuckles whitening. “What the fuck was that?” she hissed, but her hips rocked forward slightly against the mattress.

“Ungh your moan. I can’t fight this urge anymore!” Ryan growled as he grabbed her hips and dragged her closer to the edge of the bed. Before Lily could protest, his fingers hooked into the waistband of her sweatpants and yanked them down past her knees in one rough motion. His hot breath already ghosted over her damp panties as she gasped, her thighs instinctively spreading wider—whether to push him away or pull him closer, even she couldn’t tell.

“Ryan wait why… mmm yes don’t stop!” Lily arched off the bed as his tongue licked a hot stripe through her soaked panties, her fingers twisting in his hair—half shoving, half clinging—as the conflicting sensations short-circuited her thoughts. She could feel him smiling against her thigh, his teeth scraping lightly over the lace edge before tugging it aside with his chin, exposing her completely. The shock of cool air against her bare skin made her gasp, but the wet heat of his mouth closing over her clit drowned the sound in a choked moan.

Lily trembled violently, her legs locking around Ryan’s head as he sucked hard, swirling his tongue in tight circles that sent electric jolts up her spine. Her orgasm hit her like a freight train—sudden and brutal—her whole body seizing as she came with a strangled scream, her hips jerking uncontrollably against his face. Ryan groaned into her, lapping at her frantically as she pulsed around his tongue, her thighs shaking against his ears. She barely registered the warm trickle of his precum soaking through his jeans where he rutted against the bedframe, his own hips stuttering wildly.

“You taste so good Lily. I think I feel better now.” Ryan gasped against her thigh, his breath ragged as he pulled away—only for his entire body to suddenly seize up. His back arched violently as tendons popped like guitar strings tuning themselves, shoulders broadening under his stretched-thin t-shirt. Lily watched in mute horror as his biceps swelled against the sleeves, the fabric splitting at the seams with a sound like cracking ice.

And between his thighs—god, between his thighs—his cock twitched visibly through his jeans, straining against denim as it thickened obscenely, the zipper teeth groaning under the pressure. A wet spot bloomed wider where his precum soaked through, the scent of him—thick and heavy like ozone before a storm—making Lily’s mouth water even as her rational mind screamed.

“I’m going to fuck the shit out of you.”

Ryan’s voice came out deeper—wrong—as his jawline sharpened like a blade being honed mid-strike. Lily barely had time to process how his once-boyish features twisted into something predatory and devastatingly handsome before he flipped her onto her stomach, his palm pressing between her shoulder blades with terrifying ease. His other hand hooked into the waistband of her panties and tore them clean off with a sound like ripping paper, the frayed lace fluttering to the floor beside her discarded sweatpants.

Ryan thrusts as he loses his virginity—not gentle, not hesitant—but with a single brutal snap of his hips that buried him to the hilt inside her unprepared body. Lily screamed, her fingers clawing at the comforter as her back arched violently, her toes curling against the mattress. The pain burned white-hot for one excruciating second before dissolving into something else entirely—her walls fluttering around him instinctively, greedy, as if her body recognized what her mind couldn’t: that she was made for this, for him. Ryan groaned like a dying man granted salvation, his cock twitching inside her as precum leaked in thick pulses against her cervix.

They howl like beasts as Ryan fucks with no emotion—only hunger, only need. His hips pistoned into her with relentless precision, each thrust driving her face deeper into the pillow, her muffled cries lost beneath the wet slap of skin and the creaking protest of the bedframe. Lily sobbed as her second orgasm ripped through her without warning, her vision whiting out as her cunt clamped down on him in rhythmic spasms. Ryan barely noticed, his rhythm never faltering, his fingers digging bruises into her hips as he chased his own release with single-minded intensity.

Lily felt herself orgasm over and over as Ryan fed off her pleasure—his cock swelling impossibly thicker inside her with each choked whimper she made, his inhuman stamina fueled by the way her body convulsed around him. Her third climax came before she even caught her breath from the last, her thighs slick with sweat and arousal as Ryan bent her spine into a sharper arch, his teeth sinking into the nape of her neck. The sharp sting sent another wave of pleasure crashing through her, her scream dissolving into a broken moan as she came again—her body no longer hers to control.

Ryan’s thrusts grew erratic, his hips stuttering against her ass as his breath came in ragged, snarling gasps. Lily could feel the moment his control snapped—his fingers tightening in her hair as he dragged her head back, his other hand clamping over her mouth to stifle her screams. His cock pulsed violently inside her, flooding her with heat as he came with a guttural roar, his hips grinding deep as if trying to fuse them together. She felt every throb, every twitch—her own climax crashing into his, her vision tunneling as her body milked him greedily.

“You really are an incubus.”

A Beautification Tale

The museum's climate control hummed like an overworked librarian as Danica adjusted her glasses, her thighs sticking slightly to the plastic bench in the dinosaur exhibit. She'd come for the fossils, but her gaze kept snagging on the security guard—not his face, but the way his belt buckle strained against his gut when he leaned to tie his shoe. Hers did that too.

The scent of epoxy hit her before the voice did. "That's not accurate," a man muttered behind her. A paleontologist—his badge said "Dr. Eli Ritter, Pleistocene Specialist"—was glaring at a diorama of fur-clad humans roasting mammoth meat. "Ice Age women weren't just shrinking violets waiting for dinner," he told the display, unaware he'd spoken aloud. His fingers, dusted with plaster powder, gestured wildly. "They invented string! Calculated lunar cycles! Probably ran the damn—oh." He blinked at Danica, who'd turned fully toward him, grinning.

"Bet they could bench-press you," Danica said. Eli's ears turned pink. "I—yes. Absolutely. Did you know the La Brea woman had biceps that—" He stopped, chewing his lip. "Sorry. People usually walk away by now." Danica shifted, her own thighs squishing against the bench. "I'd take an Ice Age Amazon over Cinderella any day," she admitted. Eli exhaled like he'd been holding that breath since grad school. "Right? No corsets. No nonsense. Just pure survival badassery."

“I wish I was a bad ass instead of the butt or everyone’s jokes.” Danica plucked at her shirt where it clung to her stomach. “At school they called me ‘Dino Danica’—not because I love fossils, but because they said I was built like a stegosaurus. Thick legs, fat tail.” She snorted, but Eli saw how her fingers trembled before she shoved them under her thighs.

“I’m so sorry. People can be jerks.” Eli said softly, adjusting his glasses. “For what it’s worth? Stegosauruses were *incredible*. Spiked tails that could shatter bones, armored plates that made predators think twice—total tanks. And you—” He hesitated, then pointed at the diorama behind her. “You’ve got the same energy as that reconstruction of the La Brea woman. Sturdy. Smart. Built to *last*.” Danica’s face burned so hot she could’ve powered the exhibit lights.

“Speaking of that! I have something cool to show you. Stay right there!” Eli spun away with the clumsy urgency of someone who'd spent too many years hunched over excavation sites rather than in gyms. His elbow knocked over a laminated sign about mastodons as he rummaged through a battered messenger bag. Danica caught it before it hit the ground, her reflexes honed from years of grabbing snacks before bullies could swipe them.

He emerged triumphant, cradling a velvet-lined case. Inside lay a necklace—crude beads carved from mammoth tusk alternating with polished amber drops. “Found this in Alaska,” Eli whispered, as if the Ice Age artisans might overhear. “See these grooves? Whoever wore this added a new bead for every winter survived.” His thumb traced the notches between beads, each one a tiny rebellion against extinction. “Probably belonged to someone who laughed at blizzards and wrestled dire wolves for fun.”

“I’m not really supposed to do this… but do you want to try it in?” Eli blurted out, shoving the case toward Danica with all the grace of a charging woolly rhino. The amber beads caught the fluorescent light, glowing like trapped fire against the dark velvet. Danica’s breath hitched—her fingers hovered above the necklace, torn between wanting to touch something that had survived millennia and the fear that her sausage fingers would snap it in half.

“Um ok yeah!”

Danica blushed furiously as Eli carefully lifted the necklace from its case, his plaster-dusted fingers surprisingly deft. "Turn around," he murmured, and when she did, the brush of his knuckles against her neck sent an unexpected shiver down her spine. The mammoth beads settled cool against her collarbones, the amber drops warm from Eli's touch—ancient and alive all at once.

“It looks great on you.” Eli’s voice cracked mid-sentence as the first amber bead hissed against Danica’s skin. She gasped—not from pain, but from the sudden, impossible warmth spreading through her chest like swallowed sunlight. The mammoth tusk beads turned viscous, seeping into her pores in oily rivulets that left no stain, only a tingling pressure building beneath her flesh.

“What the?” Danica staggered back as her knees popped like overstretched rubber bands, her sweatpants splitting at the seams as her calves thickened with sudden, ropy muscle. The museum floor lurched—no, she was rising, her hips cracking wider as her spine elongated in jagged bursts. Eli’s awestruck face dropped below her eyeline as she shot past six feet, her formerly soft arms now corded with thick veins beneath skin that gleamed like tanned hide.

Her thighs erupted outward, the denim shredding entirely as quadriceps like carved oak bulged beneath new stretch marks that shimmered gold under the exhibit lights. Danica clutched at her stomach—where rolls had once sagged, a brutal six-pack now flexed beneath her fingertips, her navel deepening into a dark crevasse between slabs of abdominal muscle. “I—I can see my toes,” she choked out, staring dumbfounded at her bare feet, now splayed wide enough to crush beer cans flat.

Eli stumbled back as Danica’s shoulders broadened with a wet crunch, her bra straps snapping like twigs. Her biceps swelled until they strained against her triceps, the valleys between muscles deep enough to pool shadow. The mammoth necklace fused to her collarbones, the beads dissolving into her skin—amber pupils now blazed in Danica’s widened eyes, her irises flickering like trapped wildfire. She panted through bared teeth that felt suddenly too sharp, her tongue probing at elongated canines.

Then came the waist—cinching inward with an audible *whump* of displaced air, her love handles melting into taut obliques as her hips flared wide enough to make her pelvis creak. Her ass erupted outward like two boulders shoved beneath her skin, each cheek rounding with such violent suddenness that Eli had to duck when her belt buckle shot off like shrapnel. The remains of her jeans hung in tatters around thighs thick as tree trunks, the denim seams popping threads one by one as her glutes kept expanding.

Her breasts ballooned into two impossible orbs, heaving against the remains of her stretched-out bra until the fabric surrendered with a pathetic *ping*. The nipples darkened to deep amber, each areola textured like ancient tree bark as her chest swelled to rival the museum's reconstructed mammoth skull nearby. Danica groaned—half pain, half exhilaration—as her hair thickened into wild tangles, lengthening down her back in unruly waves the color of freshly split cedar. Strands lashed at Eli's face as her scalp tingled, the roots pulsing with each heartbeat until her mane reached her waist, smelling inexplicably of pine tar and tundra wind.

Finally her face changed as her lips became plump and her cheekbones rose as fat left her face, the soft roundness of her jawline sharpening into a blade-like edge that could've cut glass. Her nose narrowed into an elegant arch, nostrils flaring wide as she sucked in air through newly widened airways. Danica touched her own cheekbones in disbelief—where dimples had once dented baby fat, there were now high, proud ridges that cast shadows across her face in the exhibit lighting. When she ran her tongue over her teeth again, they clicked like stone tools striking flint.

“Holy shit you’ve become… you’ve become a fucking Ice Age queen,” Eli breathed, staring up at Danica with the reverence of a man seeing cave paintings for the first time. She flexed experimentally—every muscle responded like a bowstring drawn taut, her shoulders rolling with terrifying ease as she lifted her arms overhead. The motion made her pectorals ripple like tectonic plates shifting, her new breasts bouncing only slightly before settling with formidable weight against her ribcage.

Then Danica noticed Eli’s khakis tenting obscenely, the fabric straining over an erection that looked painfully confined. In one fluid motion—her reflexes now honed by whatever primal magic lived in those beads—she pinned him against the mastodon display. “Tell me,” she growled, her voice deeper now, vibrating with an ancient timbre that made the glass cases tremble. “You’ve got a matching piece, don’t you? Some kingly torque or warrior’s armband hidden in that bag of yours?” Her nostrils flared at the scent of his arousal, muskier now beneath the starch of his button-down. “I need a king and I need him now!”

You only realize that the fuzziness is literal in this case, as your partner shoots you a look and calls out your name a bit past the entrance of the dense, golden meadow. "Y/N, what's going on?? Something. . . Something appears to be-" They signal to their neck, before realizing that theirs was the same way. "What- what the-" all of a sudden they shiver, and you follow suit, as you feel the heat travel from your chest and neck to the rest of your body, lingering longest around your breasts, ass, groin and thighs. You tremble and moan lightly, and it seems that your partner follows suit.

You wonder how they're feeling at the moment - how they would feel in you at the moment. You shiver again, trembling as fur covers your body more, and you lose a few inches of height. Your breasts grow, and two small breasts form beneath them. Your ass triples in size, as your thighs grow to match. The pleasure is so divine as you feel this, and you look into your partners eyes - you can tell they feel the same way. Their eyes are full of lust, their chest is soft, and their ears are lengthening in sync with yours.

Sounds and smells both get more vibrant as your nose, ears, and organs shift. The world feels brighter, and the birds sound sweeter. But nothing smells, looks, and sounds better than your partners hot, sweaty body - and they feel the same way about you, as they're fully erect, and written in their eyes is their thoughts, or well, their and your only thought, now that you're both near gully turned bunny-people hybrids - breed.

You bounce towards eachother and they mount on top of you, rubbing their face in your ass as your new tail erupts from between your cheeks, heightening the already intense feelings of heat flowing through you. After rubbing their face in your luscious cheeks, they sniff your back side, and start to eat you out lightly, before sticking their dick in you, and fucking you gently at first, before rapidly going in and out of you, performing in nature's first and most meaningful dance. They squeeze your ass and titties tightly as they fuck and suck you for hours, until the sunsets, in which they finally cum inside of you. They pull out slowly, and then lick your clit until you climax. At the end you're both huffing, and puffing, and you're almost certainly pregnant - but you're also both begging for more - and this time, you'll be on top~♡

A Male Transformation Story

“I’m sorry Parker. I had to do this. I must obey my queen.” Professor Langley’s trembling fingers hovered over the syringe’s plunger as Parker struggled against the leather restraints, his wiry frame dwarfed by the cold steel examination table. The fluorescent lights buzzed overhead, casting harsh shadows across the assistant’s terrified face—his round glasses askew, his Adam’s apple bobbing frantically as the needle pierced his jugular. The plunger depressed with a whisper, flooding his bloodstream with viscous, red liquid.

Parker’s scream choked into a guttural roar as veins bulged beneath his skin like rivers breaching their banks. His shoulders ripped through the restraints, the leather straps snapping like overstretched guitar strings, and the examination table groaned under the sudden weight redistribution. His fingers—once delicate from endless pipette work—swelled into thick, calloused digits that dented the steel table. His lab coat shredded as his torso expanded, fabric threads popping like firecrackers while his reflection in the surgical lamp morphed: jaw squaring, stubble thickening into a shadowed beard, pupils dilating with predatory focus. “Oh,” Parker rumbled, flexing his newfound bulk with a grin that sent Langley stumbling backward, “this feels so fucking good.”

Parker looked down at himself, marveling at the way his muscles twitched and pulsed beneath his skin—then froze as a searing heat bloomed between his thighs. His cock thickened, straining against his shredded briefs like a live wire, the fabric tearing audibly as it swelled beyond containment. Every heartbeat sent another surge of blood rushing into his erection, veins standing in stark relief along its length, his balls tightening with an almost painful weight. A ragged groan tore from his throat as he palmed himself through the ruined fabric.

“Fuck yeah!”

Parker’s breath came in ragged bursts as he squeezed his cock, the sensation overwhelming—every nerve ending lit up like a live circuit, his hips jerking involuntarily against his own grip. The scent of musk flooded the sterile lab air, mingling with the tang of spilled chemicals and torn fabric. Langley pressed himself against the far wall, his knees buckling as he watched Parker’s transformation crest—his assistant’s once-timid eyes now glazed with primal hunger, fixed on him like prey.

“I need to fuck a chick.” Parker growled, his voice deeper than before, vibrating the glass beakers on the counter. The professor barely had time to process the words before Parker’s fist clenched around his own cock, pumping once—hard—as his hips bucked forward violently. A thick rope of cum spattered the floor between them, followed by another, and another, each pulse hitting with enough force to splatter Langley’s polished shoes. The professor whimpered, pressing himself tighter against the wall as Parker panted, his chest heaving, his body still twitching with residual pleasure.

Parker’s nostrils flared as he caught the scent of something—perfume, sweat, *woman*—drifting from the hallway beyond the lab. His cock jerked again, still semi-hard and dripping. Without hesitation, he lunged for the door, his massive shoulder demolishing the frame as he barreled into the fluorescent-lit corridor. Students scattered like startled pigeons, their screams echoing off the tile as Parker sniffed the air, zeroing in on the scent that made his pulse hammer—lavender and something sweet, something *hers*.

Professor Langley’s trembling voice followed him: “Parker, *wait*—you don’t understand what you’re—” But the words dissolved into static as Parker’s enhanced hearing locked onto the rhythmic click of heels three floors below. His muscles coiled, tendons snapping taut like bowstrings, before he launched himself down the stairwell, clearing entire flights in single bounds. The walls blurred around him, the scent thickening with every stride until he skidded to a stop outside the biology department lounge, his erection straining against his ruined slacks.

She was bent over a microscope, oblivious—her blonde ponytail swaying as she adjusted the focus, her skirt riding up just enough to reveal the soft curve of her thighs. Parker’s nostrils flared as her pheromones hit him like a sucker punch: *there*, a woman, her pulse fluttering visibly at her throat. He didn’t remember moving, but suddenly he was behind her, his massive hands gripping her hips as she gasped, her body arching instinctively against his. “Wh-what the hell—?” she stammered, but Parker’s growl drowned her out, his teeth grazing her shoulder through the thin fabric of her blouse.

The lounge door slammed shut behind them—whether by his foot or some terrified onlooker, it didn’t matter. Her breath hitched as Parker spun her around, her back pressing into the lab table, her thighs parting reflexively under the sheer dominance radiating off him. “P-Parker?” she whispered, recognition flickering in her widened eyes—*she knew him*, the meek assistant who’d fetched her coffee last week—but the man pinning her now was something else entirely. His cock twitched against her stomach, hot and insistent, smearing precum across her pressed blouse. “You’re… different,” she breathed, and Parker grinned, his fingers tightening possessively around her wrists.

Then the scent hit her—musky, primal, *his*—and her knees buckled. The microscope clattered to the floor as she slid down Parker’s body, her fingers trembling where they gripped his thighs. Her nostrils flared, pupils dilating as the pheromones rewired her brain, her panties soaking through in seconds. “Oh god,” she moaned, her cheek nuzzling against the throbbing outline of his cock through his torn slacks, her lips parting without thought. Every rational neuron screamed to run, but her body arched upward, her tongue darting out to taste the salty bead of precum staining the fabric.

Parker growled, his hands fisting in her ponytail as he dragged her face closer, her breath hitching at the sheer *heat* radiating off him. “You smell that?” he rumbled, grinding his erection against her parted lips. “That’s you *wanting* me.” Her whimper vibrated against him as her resolve shattered—her teeth catching the ruined fabric of his slacks, tearing them open with a desperate yank. His cock sprang free, slapping against her flushed cheek, and her tongue lashed out instinctively, lapping at the swollen head. The taste—copper, sweat, *him*—flooded her mouth, her eyelids fluttering as her hips rocked against nothing, seeking friction.

Parker’s hips pistoned forward without warning, his cock spearing down her throat with a wet *shlck*. Her gag reflex barely had time to kick in before he was hilt-deep, her nose pressed into the coarse thatch of his pubes, her throat bulging obscenely around him. Tears streaked her mascara as she choked, her nails digging into his thighs—but Parker didn’t slow, didn’t stop, his balls slapping against her chin as he fucked her face with single-minded brutality. “Take it,” he snarled, his voice guttural, *other*, “take every fucking drop.” Her muffled sobs only seemed to spur him on, his thrusts growing erratic, his grip tightening in her hair until her scalp burned.

The scent of her arousal—thick, syrupy, *dripping*—flooded Parker’s senses, overriding even the animal drive to throat-fuck her into oblivion. With a snarl, he yanked her off his cock, her lips swollen and glistening with spit, her breath coming in ragged, wet gasps. Before she could recover, he flipped her onto the lab table, her skirt ripping clean off as he pinned her chest-down against the cold metal. Her ass jiggled enticingly, her soaked panties clinging to her swollen folds, and Parker’s cock twitched violently, precum splattering her lower back. “Mine,” he growled, his fingers hooking into the flimsy fabric of her panties and *pulling*, the sound of tearing cotton lost beneath her startled yelp.

Her pussy glistened under the fluorescent lights, pink and puffy and *begging* for him, her thighs trembling as she instinctively arched her back higher. Parker didn’t hesitate—he lined up his cock, the swollen head nudging against her dripping entrance, and *slammed* home in one brutal thrust. Her scream shattered the air as he bottomed out, her inner walls fluttering around him like a vice, her nails screeching against the table’s surface. Every nerve in Parker’s body *burned* with the need to claim her, to *breed* her, his hips pistoning into her with feral, snapping thrusts that rocked the entire table.

“Take it bitch.” Parker snarled, his thick fingers digging bruises into her hips as he hammered into her, each thrust driving the lab table forward with a metallic screech. Her breasts bounced violently against the cold steel surface, her nipples hardening painfully against the friction—but the pain only sharpened the pleasure arcing through her body like lightning. Parker’s cock stretched her impossibly wide, the ridge of his head grinding against her cervix with every punishing stroke, her cunt dripping down his thighs in slick rivulets. “Fuck—*fuck*—your tight but you’re not perfect,” he growled, his voice raw with need, his balls tightening against her clenching entrance.

“I need to find my perfect mate. I need to find her!” Parker roared as he tore himself away from the whimpering girl beneath him, his cock slick with her juices but unsatisfied. The scent still clung to him—her fear, her arousal, the musk of her submission—but it wasn’t *right*, wasn’t the mate his body screamed for. He staggered back, his nostrils flaring as he inhaled the mingled scents of the lab, the hallway, the *university*—somewhere, *somewhere*, she was here. The perfect woman. His queen.

“We shouldn’t be doing this… Unh!” His voice cracked mid-protest as Brittany’s tongue traced slow circles around the head of his cock, her fingers gripping the base with practiced ease. She glanced up through her lashes, smirking at the way his glasses had fogged up, his hands clenched white-knuckled in the bedsheets. “You know you love this,” she murmured, her breath hot against his skin before taking him deeper, savoring the way his hips jerked involuntarily.

“Ungh but… but… Fuck! This is wrong. The serum’s changed you.” He gasped, tugging weakly at her hair—not to stop her, just to feel something solid, something real—as if clinging to the last shreds of his morality. Brittany rolled her eyes, pulling off with an obscene pop. “Wrong? Wrong is you still pretending you don’t want this.” Her thumb swiped at the bead of precum leaking from him, licking it off with deliberate slowness. “The serum just gave me the power to take what I want.” And with that, she swallowed him whole again, her moans vibrating around his shaft.

His resistance shattered as she hollowed her cheeks, the wet heat of her mouth too much to bear. “Britt—I’m gonna—!” His warning was cut off by a strangled groan as his hips bucked forward, spilling into her throat. She didn’t pull away, didn’t even flinch—just locked eyes with him as she swallowed every last drop, her tongue lapping at the sensitive underside until he whimpered from overstimulation.

Then she stood in one fluid motion, her lithe body glistening with a sheen of sweat under the dim bedroom light. With a wicked grin, she arched her back, letting her hands slide up her toned stomach to cup her breasts, thumbs brushing over hardened nipples. “You really think we’re done?” she purred, watching his spent cock twitch back to life against his stomach, already half-hard again under her gaze. “The serum didn’t just change me, Ryan. It made me *hungry*.”

Ryan looked mesmerized as he stared at her amazing cleavage. Brittany’s new curves were too extraordinary to be ignored. She stepped closer, pressing her softness against his chest, trapping his cock between them. His breath hitched as she ground against him, her wetness soaking his bare skin.

“I want you to take it. I want you to take the serum.” Brittany whispered against his lips, her fingers tangling in his hair as she rolled her hips, smearing her arousal across his twitching cock. Ryan’s resolve crumbled—his hands, which had been gripping the sheets in protest, now slid up her thighs, fingers digging into the soft flesh of her ass. She laughed, low and throaty, when she felt him surrender, his moan vibrating against her collarbone as she bit down lightly. “That’s it, baby. Stop fighting.”

“It’s time for you to give in.” Brittany’s voice dripped with dark promise as she pulled a small vial from the nightstand, the liquid inside swirling like molten gold under the dim light. Before Ryan could protest, she pressed the vial to his lips, tipping it back with ruthless precision. The serum burned like whiskey and honey, searing down his throat—and then the transformation hit. His muscles writhed beneath his skin, shoulders broadening, abs carving themselves into existence as veins snaked across his newly defined arms. He gasped, arching off the bed as the changes wracked him, his glasses clattering to the floor as his vision sharpened unnaturally.

Ryan groaned, his cock thickening against Brittany’s thigh, the need to fuck her—*claim* her—overriding every rational thought. His hands, once hesitant, now gripped her waist with bruising force, flipping her onto her back with a growl that didn’t sound entirely human. Brittany’s laughter was breathless, triumphant, as she spread her legs for him, nails raking down his chest. “*There* he is,” she taunted, arching into him as his teeth grazed her throat. “Now show me what that serum *really* did to you.”

“No more talking.” Ryan growled as his primal instincts took over. Brittany gasped as he pinned her wrists above her head effortlessly, his new strength making her squirm with excitement. His lips crashed against hers, hungry and demanding, as his free hand roughly squeezed her breast, thumb flicking her nipple with just enough pressure to make her arch beneath him. The serum had amplified his senses—every moan she made, every shudder of her body, only fueled his nee to dominate her completely. Brittany’s breath hitched when she felt the swollen head of his cock press against her slick entrance, teasing her with slow, torturous circles.

He thrust into her without warning, claiming her with a single brutal stroke that forced a sharp cry from her lips. Brittany’s nails dug into his shoulders as he bottomed out inside her, her walls clenching around his girth as if trying to pull him deeper still. Ryan’s hips pistoned with an animalistic rhythm, each snap of his pelvis driving her further into the mattress, the wet slap of skin echoing in the room. His teeth grazed her collarbone, biting down just hard enough to leave marks—his silent declaration that she was his now, irrevocably. “Fuck—you feel *perfect*,” he snarled against her throat, his fingers tightening around her wrists as he fucked her with a ferocity neither of them had known before.

She came first, her body bowing off the bed as pleasure detonated through her, her walls fluttering around him in erratic pulses. Ryan snarled, feeling her climax milk him mercilessly, his own release barreling toward him like a freight train. Brittany’s moans turned ragged as she felt him swell inside her, his thrusts growing erratic—and then he buried himself to the hilt with a roar, his cock pulsing as he emptied himself into her. The sensation of his cum flooding her depths sent her spiraling into a second orgasm, her thighs trembling around his hips as she clung to him, gasping his name like a prayer.

“They can’t call us geeky virgins anymore can they?” Brittany giggled.