Archive of Our Own ^beta

“Shh!” whispered Yuji, placing his finger over his lips. “You gotta keep it down, my uncle is home tonight.”

Megumi nodded, biting his lip, holding onto the arm wrapped around his chest as Yuji thrusted into his tight ass. 

He knew he was getting close to his heat, so this was a precaution he often took, even though Yuji wouldn’t be able to breed him anyway. That was one of the many perks of dating someone that was beta instead of alpha. 

Maybe Megumi would never be claimed or knotted, but he also didn’t want to be. Sex felt good enough as it was, and he didn’t want to deal with possessive assholes. He even avoided alpha porn because the idea of knotting was too weird for him.

Yuji pulled him into a kiss, tasting his moans with his mouth as he drove into him deeper. He brought his hand down to play with Megumi’s clit, timing the movement with his thrusts. 

“Fuck,” Yuji groaned. “You’re really wet.”

A sudden rush of euphoria swept over Megumi, hitting him square in the stomach, followed by a familiar, instinctual ache. Heat flooded him, along with a different kind of arousal entirely. 

He let out a pathetic whine, going limp in Yuji’s arms. 

“You okay?” Yuji asked. He stopped right away, pulling out and checking on him. He looked between Megumi’s legs in confusion. “Huh? What is this stuff?”

Megumi’s pussy was leaking slick, thicker and stickier than normal, making a mess of his thighs. And if Yuji wasn’t beta, he’d notice it had a distinct scent, too.

“I’m fine…but Yuji, I think I started my heat,” he admitted, hiding his face in his hands. “That’s slick.”

“Cool!” Yuji said, inspecting it, swiping his finger on his thigh and letting it stick between two of his fingers. He pulled them apart, watching it strand. “It feels really different. Like...way more slippery…”

Megumi chuckled. 

Or tried to even though his head was spinning.

"Sorry, but I think I should go home—“

“Can I taste it?” 

Megumi paused, a wave of heat aching within him just from the offer. 

He wanted it. He wanted it so bad. 

“I’m not sure that’s a good idea,” Megumi said, his words not matching his body language. More slick leaked onto his legs, so he crossed them, attempting to carry this conversation out normally. The following wave of dizziness made him pinch the bridge of his nose.

“Okay, that's no problem,” said Yuji, turning to grab his clothes off the floor beside the bed. But Megumi's eyes swept over him, paying extra attention to his legs…his muscles. Then the veins on his cock. 

“Wait,” he said, zoning in and out. The ache tugged inside him so deep he felt like he might pass out, his heat coming on in full force. “It’s probably okay if you…you know. I mean as long as nothing is inside me, I don’t think anything will happen…”

Yuji’s eyes lit up excitedly. 

“I’ll be super gentle,” he promised. 

He leaned Megumi onto his back, spreading his legs and looking down at his throbbing pussy, which was now pink and puffy, swollen from his heat. 

“Woah!” he said, positioning himself onto his elbows. “Does it feel different?”

Megumi nodded, trying and failing to keep it together. Even the breath that touched his pussy was too much stimulation. 

Yuji licked him tentatively at first, feeling his pussy with his tongue, swirling it around the folds. Then, settling in, he slid a hand under him to give his ass a squeeze. 

Megumi gripped the sheets with his fists so hard his knuckles turned white. 

This was a bad idea, but he didn't want to stop. He felt his better judgment slipping from him with every lash.

“Yuji—“ he warned, bucking his hips a little, trying to get him to stimulate his clit. 

Yuji chuckled. He slowly dragged his tongue up the middle of him, slick getting all over his face, settling his mouth on Megumi’s clit and sucking lightly. 

Megumi moaned, his head falling back onto the pillow behind him. But beneath each sound he made, he felt something vibrating deep in his chest. It was low and throaty, warming him, calling out through the house… 

He was losing it. 

His legs started to shake, and he let out a cry, a powerful orgasm right coming to a head. 

Then the door slammed open. 

“What the fuck is going on in here?” 

Megumi yelped, looking at the giant form of Yuji’s uncle standing in the doorway, sniffing the air, his eyes darkening when he saw them on the bed together. 

He was well over six feet tall, and his tattooed, muscular body was visible beneath his black tank. His eyes widened, and Yuji lifted his head stupidly to look at him, in shock that he was caught, but not bothering to move away fast enough to make it look like nothing was happening. 

Alpha. 

His uncle was an alpha?

“I said. What the fuck is going on in here?” Sukuna asked again. “What are you doing with an omega in your bed, brat? You aren’t an alpha.”

Yuji rose up, wiping his mouth. 

“This—“ he coughed. “This is my boyfriend Megumi. We met at school…”

Sukuna came over to the bed, grabbing Yuji up by his pink hair and tossing him back onto the other side of the bed roughly. “I don’t remember you asking for my permission.”

“You don’t have to permit me to do anything,“ Yuji said. “You aren’t my dad.”

Sukuna laughed, his eyes wild and deranged. 

“Yeah? You’re right about that. I’m absolutely not.”

Sukuna whipped off his belt with lightning speed, grabbing his nephew and holding onto his wrists, tied them together behind his back. “Should I show you how it’s done? Wanna see how your poor omega boyfriend’ll beg for me?”

Megumi knew he should run. He knew it. 

But he couldn’t move.

His heart was racing, his mind frozen in terror, but his body wasn’t listening to what his mind was screaming. 

It needed the alpha. 

His body would do anything the alpha told him to do.

Megumi opened his mouth to protest, but even his tongue failed him. He couldn’t even say a word against an alpha. 

“Get away from him!” yelled Yuji, thrashing against the restraints. 

“Nah. It’s been a while since I fucked a nice, fat omega pussy,” Sukuna said, taking Yuji’s place in between Megumi’s legs, spreading them wide and slapping his clit. “Though if you’re good, maybe I’ll let you choke on my knot.”

Sukuna leaned in, shoving two fingers into his tight heat then lapping him up, sliding his tongue over his whole pussy with deliberate, wide strokes, putting his jaw to work as he ate him. He wasn’t careful like Yuji was, and yet he was a thousand times more skilled. 

Megumi cried out, This was nothing like he’d ever experienced before.

“D-don't,” he struggled to get out. “Don’t”

“Sukuna! Uncle, stop it! You’re hurting him!”

Sukuna lifted his head to look at Yuji, slick coating his mouth, laughing. 

“Idiot. This is what real pleasure sounds like,” he sat upright, licking his lips. “Come here, brat. Get me ready for your boyfriend’s cunt.”

He pulled a struggling Yuji by the hair, his legs thrashing wildly beneath him. 

“Get the fuck off me!” 

“What’s wrong? Haven’t told your beloved boyfriend how much you love your uncle’s cock?” He unbuttoned his jeans and pushed them down his powerful, tattooed thighs, then he took his cock out and slapped Yuji’s mouth with it until it opened.

Megumi’s eyes widened watching Yuji choke, his uncle shoving it straight down his throat. And in his delirium, he was even more surprised to see Yuji actually sucking it in return.  

He swallowed it down like it was some familiar reflex, staring up into Sukuna’s eyes, allowing him to lead and set the pace without any more fight. 

Megumi squirmed again, burning with jealousy. He wanted to be used by an alpha like that. He wanted to be touched and handled and knotted. He would do anything. 

Sukuna sniffed the air, Megumi's pheromones revealing his heightened arousal. 

But he only slammed into Yuji’s throat deeper, keeping his face buried in the base of his cock until thick spit began to leak from the sides of his mouth. 

“Good. That’s better,” Sukuna said encouragingly. “I knew you could be good for me.”

He released Yuji, pulling him up and laying him next to Megumi, his cock leaking and drenched with drool. 

“Now,” Sukuna said, turning back to Megumi, setting himself up at his entrance. “Beg for it.”

“Alpha—“ he mumbled weakly, curling his toes into the mattress. He needed it so bad he could hardly think.

“Alpha what?” Sukuna asked, slapping Megumi’s clit with his palm. 

“Fuck me…” he choked out, whimpering, his pussy leaking pathetically, clenching around nothing. 

“And?” Sukuna asked again, slapping his clit harder. 

Megumi cried out. He knew what Sukuna wanted to hear. But he didn’t want that. He couldn’t get pregnant while he was still in school. And especially not with his boyfriend’s uncle. His body jerked violently. 

“And? Omega, answer me.” He slapped him again and again, pressure inside him building. 

He had to fight it. He had to for Yuji. And himself. Even if his body didn’t want to listen. He had to try his best. 

He practically choked on his tongue. 

“No—“ he ground out. 

“No?” Sukuna mocked. “You come to an alpha’s house in heat and expected me to do what exactly? Ignore your fat, fertile pussy? Don’t make me claim you, too.”

Sukuna pushed inside him and Megumi melted, losing the will to fight against him anymore. 

“Oohh—“ Megumi moaned, his head rolling to the side. 

“That’s it. Beg for me properly,” he commanded, continuing to punish his clit while keeping still inside him.

Megumi’s pussy spasmed, clenching hard around its enormous size, begging for his knot. 

Something was wrong.

Pressure was building in all the wrong places, and without movement, nothing seemed to right itself again.

“Wait—no, no—“ Megumi mumbled, struggling to get away from the cock inside him and the hand slapping him again and again until Sukuna heard what he wanted to hear. 

“Something wrong?”

“Please, uncle….please stop it,” Yuji begged, staring at the scene in front of him, trying to hide his own hardness. 

“I’ll get to you in a second,” Sukuna said. “What’s wrong, Megumi?”

“I’m gonna—“ he cried out. “I-I’m gonna pee!”

Sukuna laughed, slapping his clit even more aggressively. 

“Not pee, you’re gonna squirt. I haven’t even started moving yet and you’re about to squirt all over my cock. My poor nephew must really suck at this if he never made you squirt before.” With his other hand, he dragged Yuji’s face in between his cock and Megumi’s pussy. “But don’t worry, I’ll teach him.”

Megumi couldn’t hold it anymore. His orgasm crashed into him and he convulsed, the pressure inside him finally releasing. 

Squirt sprayed all over Yuji’s face, and Sukuna forced his mouth open with his fingers so he’d catch it all.

“God, that’s fucking hot,” Sukuna said. He pulled out and shoved his drenched cock into Yuji’s mouth, bobbing his head down on it. He groaned with satisfaction. “So fucking hot.”

Megumi’s throbbing, empty pussy started to clench painfully, his orgasm making his heat ten times worse. 

“Please—“ he whined, his body flushed and pink. His hands clenched in the sheets. “Knot me, alpha.”

His chest burned with shame. Would Yuji ever forgive him?

Sukuna dropped his nephew and grabbed onto Megumi’s hips. Keeping him steady, he shoved his cock into him again, wasting no time. His body couldn’t ignore the call either. 

He slammed in deep, leaning over top of him and scenting his neck. 

Sukuna groaned.

He was…knotting already?

Sukuna eyes closed, the base of his cock growing and stuffing Megumi’s pussy completely. He tried not to breathe in his scent, but Megumi could tell he was failing. 

Apparently that pissed him off. 

Sukuna was trapped there, or so Megumi thought, his pussy clenching so hard around him there was no way he could move.

That is— until he felt him start moving anyway. 

Megumi screamed, ecstasy ripping through him and tears welling in his eyes as Sukuna pushed his knot in and out of him. He fucked slowly at first, the sheer size of his knot making Megumi cry desperately.

“Sukuna—don’t,” Yuji begged, his eyes glued to the whole scene, watching as his uncle’s knot dove into his boyfriend’s throbbing, slick pussy again and again. 

But Sukuna ignored him. 

He started licking Megumi’s skin; first across his chest and collarbones, then up his neck, and then along his jaw, breathing the scent of him in deeply. 

“You want my seed, don’t you omega?” he whispered into his ear intimately. 

Megumi moaned, his pussy swallowing him deeper, begging to get wrecked by his knot. The pressure was building inside him again, the huge cock sliding in and out of him so good it drove the thoughts from his mind so he couldn’t respond with anything more than a whimper. 

“Let me fill you,” Sukuna said, his knot twitching. “I wanna pump you with my cum.”

Megumi ground against him to take him deeper, his pussy trying desperately to trap his knot inside him as he continued to fuck him with it. He had lost his mind. His will was totally gone.

Yuji ground his cock against the mattress. “Uncle—“

“Your cunt is so good, baby,” Sukuna continued, still ignoring his nephew. “It feels so fucking incredible. Take my seed, pretty little omega. Carry my children.”

Megumi writhed beneath him, preening at the words. He flushed sweetly, his mouth parting, totally drunk on the idea of being bred by this older, powerful alpha. 

It was a dream. 

“Please,” he whispered, the words barely forming on his lips. “I need it, alpha.”

“Megumi!” Yuji shouted. 

Sukuna laughed low. 

“Looks like your boyfriend needs me more than you, brat,” he said, but his words didn’t the same edge as before. He stared into Megumi’s green eyes, brushing the hair from away from his face as he slammed into him. 

And then, he lost it. 

Baring his teeth, Sukuna dove them straight into Megumi’s neck. 

Megumi cried out, tears spilling over as he was claimed, his body flooding with euphoria. He couldn’t breathe, the feeling of being claimed taking a hold of that deep, instinctual part of him. He melted into the feeling, accepting him completely. 

Sukuna kept biting him. 

“You’re mine,” he said, sinking his teeth into his neck over and over. “Drink in my seed. Grow my pups inside you.”

“Holy fuck,” Yuji said, helplessly watching this whole thing, pushing his cock into the mattress. 

Megumi couldn’t say or do anything except nod, staring into Sukuna’s red, possessive eyes. 

“Say you need it—,” Sukuna said. “Tell me you need my cum filling your tight, wet cunt.”

It was too much. He felt his orgasm build to the point of breaking. 

“I-I need it,” he begged, his pleasure narrowing inside him, “Please, alpha.”

Sukuna smiled, then pounded his knot into him hard, forcing his orgasm violently from him. 

Squirt sprayed all over the bed and his pussy sucked down Sukuna’s cock willingly, his powerful orgasm trapping him at last. 

Sukuna groaned low in his chest as he came. Wave after wave of cum filled him up, breeding him, and when he pulled out, it gushed out all over. 

He grabbed Yuji, shoving his face into Megumi’s leaking, drenched pussy. 

“Clean the rest,” Sukuna said, taking off his shirt and wiping his sweaty forehead with it. He was glowing—they both were—from their successful mating. 

Megumi stared at him, his heart swelling. He was so handsome. He wanted to take him into his nest, and snuggle against that muscular chest forever. 

Yuji moaned, sucking and licking Megumi's cum-covered pussy, while he humped the mattress under him. 

Then with a whine, he came, his ignored cock twitching and leaking white onto the sheets. 

“Don’t worry, brat. You can help raise my kids,” Sukuna said, stroking his hair tenderly.  “And you can help clean him every time I’m finished stuffing his cunt. Now, tell me you love me.”

“I love you, uncle,” he said, bucking his hips in his final throws. Sukuna released his hands and he grabbed onto his boyfriend, who was still cum drunk and staring dreamily at the ceiling from being bred and claimed so well.