Archive of Our Own ^beta

Kaito was the poster boy for what an alpha should be. He was absurdly tall, with arm muscles Kokichi was certain were the size of his head. He was stupid, strong, and was packing a monster cock (though that last part he could only speculate, he had seen him in grey sweatpants before, something that made him go home and rub his clit until it went numb).  

He was a perfect alpha, and Kokichi needed him bad. 

His body was tingling, and he knew his heat was almost upon him. He had nearly everything he needed in his bedroom: bottles upon bottles of water, a soft nest of pillows and blankets he’d piled up on his bed, a vibrator... All he really needed was an alpha to take care of him. Was it against his better judgement? Perhaps. But the thought of waddling through his senior year of college seemed preferable to spending his heat alone. It was reasonable, his muddied brain told him.  

He picked up his phone, sending a text to Kaito.  

Got a surprise for you!! Come to my place STAT if you want to live!! 

It was fifteen agonizing minutes before Kaito responded. 

I’m in class. Can’t it wait? 

Kokichi grunted, glancing over at his vibrator.  

No! Skip class and come over! 

Of course it wouldn’t work. Kaito would keep him waiting until the end of the day, when Kokichi was worked up and needy and desperate. When he would say anything just to be fucked, to be used and bred for the next forty-eight to seventy-two hours.  

Kokichi crawled into bed, rubbing his thighs together. It was starting, he could feel it. Pretty soon, he wouldn’t be able to make any rational decisions.   

Just come inside when you get here. 

His cunt began to burn, need growing between his legs. He writhed around in bed, wanting to put off touching for as long as he could, hoping he could hold out until Kaito arrived. 

Several minutes passed, and Kokichi rolled onto his stomach, dragging his hips against his mattress. It wasn’t as stimulating as the vibrator was, maybe it wouldn’t make the need worse. 

It did. 

Kokichi’s legs were spread wide apart, his erect clit licking against his underwear and the mattress alike. Each hump was desperate, rough bangs of his crotch against the sheets. 

He thought of Kaito coming in and finding him like this, his feverish body banging itself against the mattress, pathetic and desperate. Would he take pity on him? Or would he just walk back out, leaving Kokichi on his own to deal with the deep, primal need? 

He checked his phone to see if Kaito had responded, though it had only been a handful of minutes. 

Kokichi whined, reaching one hand down to touch himself. One finger pushed into his cunt, already wet and aching. It did nothing to make the pain subside. Another finger joined it, then another, Kokichi’s hips rolling against his own hand. He tried to make himself cum, tried to make himself feel any pleasure at all, but all he could feel was his body begging for something he couldn’t provide alone. 

The vibrator switched on after ten minutes, set on high, pressed against his clit. Kokichi’s fingers worked overtime in his cunt, his body begging to orgasm. He humped the vibrator in his hand, whimpering out a pathetic, “Please...” 

Maybe he should just call up someone else. A beta, or even another omega. It would be safer, certainly, though not nearly as satisfying. He picked up his phone, scrolling through. But no one seemed at all interesting to him, not when there was a chance Kaito would show up at his door. 

Maybe he should send him a picture. Would that get him here faster? Maybe not, the two of them had never had sex. He wasn’t sure Kaito would be interested in him at all, to be honest. But he had monopolized Kokichi’s thoughts. He felt he owed it to himself to try. 

His cunt felt so empty, even with three fingers inside. Kokichi looked around the room, begging to find something to shove inside, though he found nothing.  

The vibrator hummed on his clit, cautiously moving lower. Kokichi’s fingers pulled out of his cunt, leaving it open and willing. He pressed the tip of the vibrator to his opening, feeling it buzz his lips. Kokichi gasped at the new sensation, pushing it in. The mid-sized, silicone head of his magic wand opened him up, and Kokichi gripped the handle tight.  

I bet Kaito will be bigger, he thought, feeling his body open for the toy. 

He felt it through him, jittery and unceasing, making his teeth clack together. He pumped it in and out of himself, feeling it wiggle against his walls, desperate to please. It did precious little for him. Any fleeting moments of real pleasure went as quickly as they came, and attempts to chase the sensation were in vain. 

Kokichi’s eyes squeezed shut, imagining Kaito above him. His hands, thick and strong, holding Kokichi against him, the way the pain would subside when he was finally entered. He wondered how fast he would cum around Kaito’s dick. 

If he ever got to take it. 

It had been almost an hour since he sent the message, and he was starting to lose hope. Maybe he should resign himself to the reality of another heat spent in tears, vomiting from the pain and desperation. Another heat without being touched. 

He thrust his hips up to take more of his vibrator inside, trying to distract himself from the searing pain between his legs. Laying on his back, in nothing but his thigh-highs, Kokichi’s greedy pussy was on display for anyone who happened to walk in. Kokichi had stared at his dorm room door for so long that when it finally opened, he thought it was just a hallucination. 

“Alright, what’s so important that you had to-” A man stepped through the door. Kaito, in all his 6’3” alpha glory, stopped in the threshold, eyes bulging out of his head at the sight of Kokichi spread wide, hips rising and falling to take his toy inside his wet, dripping cunt.  

The smell hit him then, Kokichi’s hormones causing the release of hot, sweet omega pheremones. Kaito hated how that smell went straight to his cock. Why did the smell of Kokichi begging for it make him twitch?  

The boy on the bed squealed at the sight of him, looking like he was about to break his wrist with how fast he was pounding that thing into him. A broken giggle escaped his throat, his words slurring together as he crooned, “C’mere and put it in...” 

Shock was written across Kaito’s face. He stared, slack-jawed, as the frail body before him writhed. 

“Close that mouth ‘fore you catch a fly,” Kokichi pulled the vibrator out of himself with a loud squelch, grunting at how it tugged at his cunt on the way out. It pressed to his clit, leaving his hole open and ready for Kaito. 

“I know you want me,” Kokichi grinned, his words breathless. “You wanna fuck a tiny, tight little omega pussy, don’t you? I bet you get off thinking about claiming me, marking me as yours,” he bit his lip. “Fuck me, breed me, cum inside. I wanna breed—I want your cum in my pussy. I don’t need anything else in the world, just Kaito’s cum.” Kokichi’s mind started to go blank. He pulled his body up from where he lay, though his legs were like jelly, they could barely do what his brain asked. 

He dragged his body down to the end of his mattress, as close as he could get to Kaito. One hand gripped the sheets, the other reached for the button on his pants (as if he could undo it by himself in this state). 

Kaito, shocked as he was, was way too fucking turned on by Kokichi’s begging to do anything but grab Kokichi by the wrist, pressing his hand to his crotch. The omega squealed with delight, feeling the thing hardening below his touch. His hand roamed over Kaito’s clothed erection, his free hand leaving the sheets behind to play with his clit. With nothing to hold him steady, Kokichi fell forward, his face landing squarely on Kaito’s crotch. 

His mouth pressed kiss after kiss to the fabric, tongue lolling out of his mouth, leaving drool streaks across his pants as the last vestiges of his dignity left him. Kokichi’s brain had turned off, now that a big, strong alpha was here to take care of him. He nipped at it, tongue tracing over where he imagined the tip was. His hand still trying to undo that damn button by itself, thought frustration took over as he fumbled with the waistband of Kaito’s pants, yanking down hard, whining when it didn’t immediately release his cock. 

“Woah, easy...” Kaito muttered, gently brushing hair from Kokichi’s sweaty, spit-covered face. The omega moaned, lips buzzing over Kaito’s cock, babbling something incoherent up at him. Kaito finally took pity on him, gingerly moving Kokichi’s hand away and undressing himself. He pushed down his pants first, watching as Kokichi stared with wide eyes, drooling onto his chest.  

Kaito began to remove his underwear, watching as Kokichi shifted on the bed. His fingers were still working away at his pussy, smearing wetness along his inner thighs. His hips wiggled downward, desperate for pleasure. 

Don’t worry, Kaito wanted to say. You’ll get all that you need and more very soon. 

He pulled his underwear down slowly, revealing inch after inch of thick, heavy alpha cock. The scent was intoxicating, it nearly knocked Kokichi onto his back. It was so fucking big, under normal circumstances Kokichi would have been incredibly intimidated. He was a small guy, and that thing looked like it could bludgeon him from the inside. 

But right now? Kokichi wanted it. He wanted to take it all. Legs spread wide below him, he opened his mouth to beg for it. 

And then Kaito grabbed him by the hair and shoved his fat monster cock down Kokichi’s throat. 

The omega gagged on it, eyes wide with shock as the alpha facefucked him. It did nothing to alleviate the ache; if anything, it made it worse. Kokichi’s eyes squeezed shut as Kaito moved his head up and down, using him as nothing more than a doll, a toy to work him up and get him off.  

Needy, horny omega pheromones filled the room as Kokichi choked on Kaito’s cock. Tears pricked his eyes, falling down his abused face, mingling with the saliva running down his chin. Each time Kaito reeled his hips back, as his tip passed over Kokichi’s lips, the tiny omega pulled his fingers from his cunt. And with each rough thrust down his throat, he shoved them back in again, pacing his fingers in time. Kaito groaned, precum leaking from his tip like a faucet, sliding down Kokichi’s throat, forcing him to swallow it.  

“Who knew you were such a slut?” Kaito was breathless, shocked he was so close to orgasm after just a few minutes of fucking Kokichi’s throat. 

He needed to pull out. There’s no way he’s spilling his seed anywhere but Kokichi’s cunt, his alpha brain snarled. Why cum anywhere but where it counts?  

Kokichi couldn’t hold himself up anymore without Kaito. He fell backwards on his bed, his pussy on display. Both hands were touching it now. One pumping three fingers in and out rapidly, the other abusing his clit. Kaito yanked them both away, pinning them above Kokichi’s head. The omega whined, thrashing around below him, humping his hips up to try and catch Kaito’s cock with his cunt. He couldn’t produce words anymore, just frantic shrieks and whines, the heat hijacking his brain entirely. This was the point of no return, Kokichi was a brainless fuckdoll now, no more than a desperate animal looking to breed. ... At least, he would be until the end of his heat. 

When Kokichi finally slammed his cunt against Kaito’s shaft, he screamed in victory, his hips rubbing frantically against it. Kaito stared in awe, experiencing for the first time what it meant to fuck an omega. Kokichi howled, throwing his head back, trying to slide himself up along the shaft. Trying to find the tip. 

Kaito snickered, letting him have his fun for a moment. It was easy to pin both wrists with one hand, the other traveling down along Kokichi’s body, taking a moment to brush over his tits on its way down to Kokichi’s hips. 

Kaito forced him to lay flat on the mattress, his monstrous cock dangling down from his hips. Knees pushed Kokichi’s legs open further until he was laying spread eagle on his back in a puddle of his own slick. It pooled from him, his body knowing it was finally being prepared to fuck. 

Anticipation was agony. Kokichi howled like a wounded animal, slick gushing out of him. Kaito finally took pity on him, sheathing his cock inside that tiny, desperate fucksleeve Kokichi called his vagina. 

The first thrust was delicious. Finally, Kokichi’s mind was quiet. There was a cock inside of him, nothing else in the world matters. 

A worked up omega like this would allow so much inside, though with Kokichi’s petite frame, not all of Kaito entered on the first go. He grunted, slamming himself in deeper, deeper, his tip punching Kokichi’s cervix, the entrance to the womb Kaito was going to fill. 

Kokichi panted below him, eyelids heavy and body pliant. Each thrust of Kaito’s cock was rough. It would have been painful, if it weren’t for how desperate his body was for it. His cunt hugged Kaito’s cock, squeezing it so tight it was hard to pull back out. 

Kaito’s hips pressed closer to Kokichi’s, desperate to shove the last inches in. His thrusts were punishing, leaving bruises against Kokichi’s fair skin. Good, he thought. Everyone should know that Kokichi was his, now. He’d been claimed, fair and square.  

They’ll all know soon enough, he thought. When Kokichi waddles across campus with his swollen belly and milky tits, heavily pregnant with Kaito’s brood. 

His cock twitched inside Kokichi, the tip kissing his cervix over and over. Kaito ground his hips down, feeling his cock strain against the poor little muscle. He laid himself down on top of him, grunting as he stopped bothering with pulling out, instead focusing just on pushing in, in, in. 

Kokichi cried out, feeling something deep within him bow. His body was nothing more than a servant, something for an alpha to use how he pleased. Still, he screamed as his womb was opened. 

In the flush of victory, Kaito laughed, thrusting in and out of Kokichi’s pussy (and, now, his womb). Each thrust was fast, roughly beating Kokichi’s cunt, making him bruise. The little omega did not care. He was filled, and that’s what mattered. Pressed against Kaito’s groin, Kokichi’s little clit tingled with excitement, rubbing against him with each movement of the alpha’s hips. Pleasure coursed through him, his body on fire, desperate to cum. He made throaty sounds of desperation, feeling the tingling spread from his clit to his entire body, shaking it with a powerful orgasm. His legs shook, toes curling as he came, his cunt squeezing down on the unceasing cock. 

But the onslaught did not stop, nor did he want it to. Kaito fucked like a feral animal, forcing pleasure upon Kokichi, making his body take everything he wanted to give. Thrusts were erratic, the squelch of used pussy obscenely loud. 

Soon they ceased to be Kaito and Kokichi. Deep in the throes of heat and rut, they became nothing more than alpha and omega, breeding partners. Kokichi a womb and Kaito a cock, all they knew was to fertilize, to cum, to breed. 

Kaito was close. Each stroke of his cock into Kokichi’s cunt felt better than the last, and he needed it again, again, again. It was impossibly hot inside him, his body like a furnace. Normal thoughts were abandoned. Who needed full sentences when fucking an omega’s pussy? All Kaito needed was more, fuck, cum. 

Breed. 

Breed. 

Breed. 

Kokichi’s wrists were long forgotten, both hands holding his hips so hard he left marks. He growled, shoving himself deep inside the little slut.  He sat back on his heels, giving one final, rough thrust into the omega, watching his cunt open wider for the engorged base of Kaito’s cock. Pink lips stretched far too wide, making a tense ‘o’. The tip wedged into Kokichi’s womb, safe inside the tender, precious organ. Kaito grinned, finally getting his knot inside Kokichi. His balls tensed up as orgasm finally struck him, unloading his seed directly onto Kokichi’s eggs, his knot swelling up to the point of pain, even for an omega this far into his heat. 

Buckets of cum spilled into Kokichi, making his womb inflate. Kokichi’s belly swelled with his alpha’s cum, making him whine. Kaito just kept cumming, and Kokichi just kept swelling up, until his belly was stretched obscenely. Kaito felt more than a bit guilty, noticing the pain the omega was in, but he could do nothing about it. It would take a long time for his knot to go down enough that he could pull out.  

Carefully, he moved the two of them to lay on their side, Kokichi’s cum-stuffed belly between them. The alpha grabbed a blanket from the nest Kokichi had built, covering him with it. 

With a cock between his legs and a load in his pussy, Kokichi was finally able to rest. He closed his eyes, quickly falling asleep. 

Though he’d wake up before too long for round two.