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PUPS… Katsuki growls and mutters to himself as he strips his towel off in the agency locker room after his shower. It had been a grueling fucking day and he’s fucking exhausted. He should be relieved that this was his last shift before his scheduled heat leave, but he’d been distracted all fucking day. The pre-heat symptoms are hitting hard, making him feverish and irritable. He’s nearing forty and his omega has been up his fucking ass for the last few years about mating and pups. His career has always been his life and so far he’s been successful in avoiding distractions. But his heats are getting worse, lasting longer and more fucking intense. They’re getting increasingly more painful, almost to the point of unbearable. He’s always been able to get through his heats on his own, but he’s dreading this one. His brain has been circulating all day as the flush has crept into his skin and his nerves have begun to buzz. Maybe if he just gets it over with…Maybe his omega would settle down. He’s a pro hero, handling a pup should be no problem, right?
He slams his fist against his locker and instantly regrets it when the impact radiates up to his aching shoulder where Blood Riot had gotten in a lucky hit today. Fucking bastard pain in the ass… The villain has been a thorn in Katsuki’s side for years, the one fucking asshole that tarnishes Katsuki’s perfect capture and arrest record. The young alpha is annoyingly strong and their quirks are a near perfect foil for one another. Katsuki just can’t seem to get a fucking handle on the alpha, even as he secretly admires the stupid sexy villain from afar. He hates to admit it, but maybe he should let his younger sidekicks handle it. The new generation is strong and Katsuki would never say so out loud, but he’s struggling to keep up. Yes, he’s the number two hero and he’s worked damn fucking hard for his spot, but he knows that his time is dwindling quickly, which is precisely why he signed up for the breeding service.
The form had been intensive, but he filled out all of the details for the desired alpha traits that he’d like his pups to embody should he be successfully impregnated. Now, he just has to go home and hope that the alpha they send isn’t a complete dumbass and knows what the fuck he’s doing. Katsuki knows that his omega is fucking picky as hell during heat and likes things a specific way. He’s very particular about his nest and extremely territorial. Uncharacteristic nerves swell in his stomach. He’s never heat-shared before and now he’s going to be doing it with a complete stranger, someone he anonymously “rented” so to speak. He honestly doesn’t even know if his omega will allow this alpha through the door when he’s scheduled to arrive in just an hour.
He sighs as he unlocks his door, body feeling sluggish already and he tries to calm the buzzing in his stomach with the thought of having someone in his space while he’s vulnerable. He briefly debates whether he should have bought a mating prevention collar, but the agency reassured him that all of their alphas are thoroughly trained and professional. Katsuki sure as fuck hopes they are for the amount he paid. He tosses his keys to the table and instantly strides to his nest. Irritation swarms him and he feels out of place. His skin feels too hot and he sheds his tank top over his head. He’ll begrudgingly keep his sweats on for now just for the sake of some modesty when he answers the door, but the fabric feels tight and itchy over his damp skin. His abdomen is already clenching and he knows that soon he’ll start soaking through his boxers as his body prepares for a hellish three days. He fucking hates it. His omega is practically clawing to be released as he inspects his nest and brushes his scent glands over the laundry he’s accumulated and woven into a circular structure on his tatami. It still doesn’t feel right…but, he also knows that he’s being nitpicky. This will be the first time that he’ll be welcoming ANY alpha into his nest and some intrinsic part of him is seeking approval, even if he thinks it’s dumb. He’s the fucking best and his nest should reflect that. He fusses a bit more, rearranging a couple of the heavier scented items.
He gets so lost in his thoughts that he startles when there’s a pounding on his door. At first, his omega surges upwards with a growl, but then rationality takes over and he forces himself to relax. Shit, he needs to get himself under control. He takes a deep breath and grimaces when he takes a step, realizing that he’s already soaked through his boxers. Well…too late to change now. This alpha is just going to have to deal with it, not like they aren’t going to be naked soon anyway. His steps are hurried as the pounding continues as if the person has been knocking for quite awhile.
“Yeah, yeah! I’m coming!” he shouts irritably, trying not to bristle that someone is on his doorstep and going to enter his sanctuary. He tries to hold on to the last shreds of his dignity, despite the rapidly darkening patch around his crotch. He should have worn the black sweats. He quickly turns the deadbolt and swings the door open violently.
A high whine suddenly crawls from his throat when his lungs expand with the most powerful scent he’s ever encountered. His eyes flutter, completely obscuring his sight of the alpha in front of him as he nearly drops to his knees when his pussy flutters around emptiness and slick pours from him in a wave. Holy shit… He trembles in place and has to grab tightly to the doorframe to keep from collapsing. His palms ignite from the sweat gathering on his hands, scorching the wood beneath his grip.
“Well, isn’t this a surprise…” A low familiar voice growls, sending a shiver down Katsuki’s spine while he tries to gather his scattered thoughts. His eyes are stinging with sweat as he tries to crack them open, but the moment he manages, he closes them again, unable to believe what he’s seeing. He has to be imagining this. There’s no fucking way that Blood fucking Riot is standing at his door smelling like every delicious sin at once.
“What the fuck?” Katsuki hisses, trying to get his body under control. There’s a goddamn villain at his door. Shakily, he tries to lift his palm from the doorway, but before he can even aim, his wrist is caught in a hardened grip and lowered.
“Hittin’ you hard, isn’t it, hero?” Riot purrs. “Must be my lucky fucking day.”
“How did you fucking find me?” Katsuki whispers hoarsely, Riot’s grip is the only thing holding him up as a sudden cramp nearly doubles him over with pain. Haze is already starting to cloud his vision as he looks up to meet intense and amused garnet eyes.
“You invited me, Katsuki Bakugou,” the villain murmurs and Katsuki whimpers when the scent around him magnifies, completely drowning his own out. Pure alpha pheromones strike his hindbrain like a drum, completely bypassing his confusion as to how the fuck he invited the villain to his home or how the bastard knows Katsuki’s name. “I didn’t–” he slurs weakly. He needs to fight. Fuck. Fuck. Fuck.
He can’t even muster the energy when a hand wraps around his throat and a thumb begins to circle over his gland in a way that makes his omega simper. “I’ve always wondered what you’d look like under me, pretty omega,” Riot growls and Katsuki is forced to relinquish his hold on the doorframe as he’s shoved backwards by the grip on his neck. His legs buckle as he stumbles, but the villain keeps him aloft as the door slams shut, trapping him and the alpha together.
“Get your hands off–” Katsuki tries to growl, palms sparking at his sides with no more power than a sparkler in the rain. He feels like he’s on fire as he attempts to focus on the threat in his space, but it doesn’t help when all his omega wants to do is tilt their head to the side in submission and spread their legs to the strong virile alpha clearly broadcasting his arousal.
“Thought you wanted pups, omega,” Riot coos and Katsuki’s omega howls at the offer, more slick dampening his sweats as a pulse runs through him. “There’s a certain irony to all of this…You were oddly specific when requesting an alpha, baby. Now, what were the fucking chances that I was the only one to fit the bill? Looks like we’re going to be getting to know one another a little better.”
Katsuki whines when he’s suddenly pulled against a broad chest. He’s always been smaller than the monstrous villain, often avoiding direct hand to hand combat and fighting from a distance in the air to keep away from sharp hardened edges that could shred through his skin in moments or the sheer weight of rock that could crush him. Now he’s pressed up against the villain’s soft t-shirt and his nostrils flare as more of that delectable masculine musk floats through him. An involuntary groan tumbles from his mouth when a large hand strokes down his spine. “Fuck, you smell so sweet, omega,” Riot growls and Katsuki yelps as he’s suddenly being picked up into strong arms. “Jesus, you’re fucking soaked…”
Dizziness swamps Katsuki in a tempest of heat and his head lolls being this close to the source of the alpha’s scent. As if he can sense it, Riot’s’s fist wraps into the back of his hair and shoves his face further until his nose slips through the oil of the alpha’s gland. “Go on, baby, breathe it in and relax for me.”
Katsuki can feel himself slipping from control as Riot carries him through the apartment with sure steps as if he already knows where he’s going. Hot. Everything is so fucking hot. He whimpers as his nose is pressed harder against the alpha’s gland and he huffs in the intoxicating scent of someone who shouldn’t be here. He squirms when a sharp cramp strikes him just as the alpha nuzzles against his hair. “Invite me into your pretty nest, omega, so I can see if you taste as sweet as you smell,” the alpha purrs, sounding strained.
Words of protest try to form on Katsuki’s tongue, but instead his omega surges to the front. “Alpha,” he murmurs against Riot’s gland and Riot’s hand in his hair loosens as Katsuki’s head tilts to the side. A low rumble tickles in his ear as Riot’s scent turns pleased and suddenly his head is pulled backwards. He isn’t even given the opportunity to whine at the loss when his neck is notched against the alpha’s. He sucks in a sharp breath when every muscle in his body spasms and his pussy clenches down hard as their scents mix together. His pants cling to his thighs as slick saturates the fabric. He wants them off…NOW. He needs alpha to breed him. Knot! Pups!
His eyes roll back at the sensations bombarding him. He doesn’t even hear his own whispered words through the rushing in his ears. “Alpha, please…”
The breath in his lungs vacates as his back hits a cushioned surface and his offending pants are torn down his legs. He shivers as his omega finally breaks to the surface.
RIOT
When he’d gotten the call for a new client request, Riot had been irritated as hell. While he makes bank for his “hobby” career breeding omegas in need, he really doesn’t want to be away from his pretty hero right now. The feisty omega is a near constant itch in his mind. He lives for every tiny scrap of the hero’s attention. He’s not sure what it is, but his alpha has this insatiable urge to get closer. So being pulled away for three to five days to breed some random omega sounds like a waste of his time when he could be enticing his pretty hero into a battle just for the chance to see him in person. But whoever this Katsuki Bakugou omega was, they paid an exorbitant amount for Riot to essentially knot and pup him. Never in his wildest dreams could he have predicted seeing his pretty hero, lovely and flushed with heat, slicking through his pants once that door swung open.
“Fuck, you’re beautiful,” Riot murmurs as he gets his first look at all of Katsuki, bare and slicking with arousal in his perfect nest. The whole room smells sweet just like his omega, but he can see how much time and effort was put into the lovely nest around them. Katsuki’s stunning red irises are slowly disappearing into a pool of black as he loses the fight against his instincts. He knows that his pretty little hero probably fought hard, but Riot won’t pass up this golden opportunity. If his perfect omega wants to be pupped, Riot is more than fucking happy to satisfy him. Riot knows his own success rate as one of the agency’s top breeders…100%. He’ll give his omega a full fucking litter of pups. This is an intervention by Fate herself, bringing them together and Riot is not one to look a gift horse in the mouth. Some part of him has always known that Dynamight was meant to be his. His omega just needs a little more “coaxing.”
Riot shucks his clothes with well-practiced hands while Katsuki is still lost in the pheromonal storm of the scenting. He’s never seen even a shred of evidence to indicate that Katsuki has ever had any sort of intimate relations during his career as a pro hero. Riot knows, he’s paid attention. The older omega is private and seems to keep to himself, rarely ever doing interviews even as the Number Two hero. Riot despises heroes as a whole, has since he was young, but he’s always had his eyes on Dynamight. The first time they battled it was like a light suddenly illuminating a dark room. Riot may be half of the omega’s age, but he knows that Katsuki is the best and Riot will do ANYTHING to bask in the furious light that the omega emits naturally.
Riot’s eyes track down over battle-scarred pale skin that looks like an artful masterpiece to his eyes and nearly salivates at the perfect pussy drooling between the omega’s toned thighs. Fuck…he’s thought about it so many times. Now, he gets to experience it. His omega may have unknowingly opened the door and then tried to close it, but Riot’s always been a big fan of breaking and entering anyway, always leaving with the prize. Katsuki is HIS now.
With that possessive thought, he grabs the back of Katsuki’s knees as he bends down, pushing them up to the omega’s chest. “Alpha!” Katsuki whispers hoarsely, abdomen contracting under Riot’s watchful eye as more slick drips from between chubby folds. Riot growls as he buries his face between quivering legs and drags his tongue between soft pussy lips. Fuck… Katsuki tastes like liquid caramel with just a hint of something spicy that tingles over Riot’s tongue. He’s already addicted as he drags over soft puffy lips and teases at the swollen red nub of Katsuki’s clit with his tongue. The omega squirms with low gravelly moans and Riot is forced to put more weight behind his hands to keep Katsuki pinned in place while he feasts. More slick trickles from Katsuki’s tempting opening and Riot dives for it, pressing his tongue against the small hole to catch the stream flowing freely from it.
Katsuki’s skin is searing under his touch as he digs his tongue through the tight entrance, stretching the walls around the girth of his tongue. He’s often been complimented by other omegas about his mouth and how good his tongue feels, so he uses it to his advantage when he can, especially when they’re still semi-lucid in the pre-heat stages. Katsuki had been cutting it close when he scheduled Riot’s arrival time. Either that…or Riot’s pheromones had more of an effect than he thought and he tipped the scales to draw Katsuki’s omega up sooner than planned. He has a suspicion that the latter is more likely based on Katsuki’s instant reaction to him at the door. A sweet little cry is music to his ears as he digs his long tongue in deep and begins to lick at plush silky walls that gush more sweet liquid every time Riot swallows.
He grins when fingers suddenly tangle in his long strands and begin to frantically tug in desperation and Katsuki clenches around his tongue with a slutty moan that Riot stocks away for the future. He retracts his tongue and drags his mouth upwards to wrap his lips around Katsuki’s clit to give it a vicious suck while he drives two fingers into the omega’s sloppy hole, making Katsuki jolt with a yelp. Tight walls clamp down hard over his fingers instantly as he starts to pump them while gently nibbling and sucking at the sensitive bundle of nerves in his mouth. Katsuki is so fucking tight, possibly the tightest that Riot has ever encountered in his years as a breeding provider. Typically, omegas need to be knotted frequently to regulate hormones and briefly wonders…No, that can’t be right. Katsuki is well into his forties. There’s just no way…But Riot thinks about all of the speculation around Katsuki’s private life and lack of partners, and can’t help but wonder. Maybe this is why he hired a breeding service. Has his poor omega ever had a knot? Riot has to force it to wiggle a third finger inside and Katsuki writhes with a mewl.
“Alpha, please,” Katsuki gasps, tugging hard at Riot’s strands. Fuck, he loves hearing his pretty hero call him Alpha. Riot tightens his fingers, digging them hard into plush thighs when Katsuki threatens to close them over his head. Riot could happily suffocate between his omega’s thighs at some point, but right now…he needs his omega to squirt for him. He wants to be able to see Katsuki when he comes undone for the first time. He curls his fingers up into Katsuki’s sweet spot and drills his fingers into it, making Katsuki stutter a howl of pleasure that causes Riot’s hardening to prickle over his skin in waves.
“Come on, omega. Give it to me. I want to see it.” Riot releases Katsuki’s clit only long enough to growl before nipping harshly at the little bud. Apparently, the little bite of pain is just enough and Riot’s eyes widen when Katsuki’s walls spasm hard around his fingers just before slick bursts from the omega like a fountain, dousing Riot’s face, neck, and chest with his release. Riot licks over his lips with a feral grin and dives in to lick at Katsuki’s fluttering pussy like it’s his last meal while working his fingers hard and fast. Katsuki practically bows up over the nest, fighting against Riot’s hold and yanking painfully at his hair as he whines an animalistic sound that Riot has never heard an omega make before. It has his alpha crawling upwards with a victorious snarl as he feasts from his omega’s slick that now marks him as his alpha. He wears Katsuki’s scent now and that’s as good of a claim as any.
Only when Katsuki collapses back to the nest, shaking and limp, does Riot slowly pull his fingers free and lick at the slick coating them. His eyes practically roll back as Katsuki’s scent billows with satisfied omega and curls its claws around him. Katsuki’s eyes are shut, fanning blonde lashes over blotchy red cheeks as he heaves in air like he’d suddenly forgotten how to breathe and now has to make up for it. Riot could spend forever just looking at him, but as he looks over Katsuki’s trembling limbs, a vision of him rounded with pups…with Riot’s pups…flashes before his eyes and venom drips over his tongue. Katsuki had called the agency and filled out an application for a random alpha to breed him. That thought has a sort of possessive fury rising in Riot’s gut. No one could ever measure up to his perfect omega. Katsuki is Riot’s. He’ll fucking make sure of it. By the time Katsuki’s heat is done, Riot will be his alpha in any and all ways that matter.
“You’ll never be alone again, pretty omega,” Riot rumbles as he crawls upwards to cage Katsuki below him. “I’ll give you a family worthy of you…”
Katsuki’s eyes are pure obsidian when they crack open, but he watches as a little bit of the ruby tries to peek through as if Katsuki is still fighting to remain in the driver’s seat. Riot’s suspicions are confirmed when a shaky sparking hand reaches up weakly as if trying to fire in Riot’s face. Riot grabs Katsuki’s wrist and guides it to his hardened jaw. “R-Riot…” Katsuki stammers, eyes darting over Riot’s face.
“You can’t hurt me, baby, because Fate made you for me,” Riot purrs, nuzzling against the heat of Katsuki’s lit and sparking palm. Katsuki tries to kick out against Riot’s thigh, but it’s weak and uncoordinated. Riot chuckles warmly when Katsuki’s head tilts back with a groan as his body starts to cramp once more with the need for a knot. Riot lets Katsuki’s wrist drop and his arm flops limp to the cushion above his head. Leaning down into Katsuki’s face, Riot licks over shivering pouting lips that he’s always wanted to kiss. His nose wrinkles when Katsuki’s scent sours a little in distress. He hates it instantly. “Shhhhh, omega…” he coos against Katsuki’s lips. The fact that Katsuki doesn’t turn his face away doesn’t escape Riot’s notice. “Gonna take such good care of you, Katsuki. You’ve just got to let me. I won’t let you down. I promise. Submit for me, baby. Let me give you the pups you deserve. Be mine and let me spoil you the way I’ve always wanted to.”
He leans up and sees widened eyes that have a startling amount of clarity written in red depths. Most of the black has receded and Riot marvels at the amount of control Katsuki is exhibiting even in the throes of heat. Those eyes shut briefly as Katsuki jerks, using his planted feet to roll his hips upwards and Riot growls when that slick pussy brushes lightly over his straining cock that hangs below him. “Riot, I can’t–” Katsuki whines breathlessly.
“You can, baby,” Riot reassures softly and tucks his face down into Katsuki’s neck. “Just submit, sweet omega, and I’ll give you everything.”
“You’re a villain,” he tries to argue. “Just want to get your knot wet,” he whispers hoarsely. Riot will admit that he makes a valid argument. He is a villain and he breeds omegas in need on the side. He has dozens of pups in the world and doesn’t know a single one of them. But, Katsuki doesn’t understand that he’s the one Riot has been waiting for, doesn’t know that Riot would give it all up in a heartbeat just to have him.
“You’re mine, Katsuki. The others don’t matter. I’ve been waiting too long for you. You and our pups are going to be mine and mine alone,” he growls into Katsuki’s neck, letting all of his possessive passion shine through. “I will give up EVERYTHING for you,” he snarls, huffing a hot breath over the omega’s gland as he drags his fangs over it teasingly. Katsuki rattles over the bedding and his breaths increase as if he can’t get a true breath in his lungs. He won’t be lucid for much longer. Riot could give a shit less about morality in this particular instance, but a deep primal part of himself yearns for Katsuki’s acceptance, for his undying submission. He wants his trust and when this is all said and done...He wants his love and loyalty.
“Why?” Katsuki whimpers in disbelief. At first Riot thinks that he’s asking why is Riot doing this to him as if Riot is doing this for nothing but revenge, but then Katsuki whispers something so faint that Riot almost doesn’t catch it, but when he does, he can’t believe his ears. “I’m not a good omega.”
Riot almost roars in offense, but he stuffs it down, letting his scent rage around him so strongly that Katsuki whines a high distressed sound. His burning ball of passionate light is doubting himself, not Riot’s intentions, and something about that wounds Riot to his core. He shifts his face and finally captures Katsuki’s lips in a furious kiss while those lovely gemstone eyes blink up at him in shock. He wraps his claws in shaggy blonde hair to keep Katsuki right where he wants him as he ravages his lips and tongue, claiming his sweet mouth for his own. He swallows Katsuki’s low moan and dips his hips to grind his throbbing cock over Katsuki’s belly, leaking a stream of pre over the skin. “You’re mine,” Riot snarls when he pulls away for air and Katsuki’s lips are red and swollen. “You’re perfect. Such a good omega.”
“Riot, it hurts,” Katsuki mutters through panting breaths.
“I know, baby,” Riot murmurs between kisses to his omega’s trembling jaw as black once more starts to creep over red irises. “Let me prove myself…submit for me and only me.”
“You better k-keep your word,” Katsuki hisses and bucks again in pain, but when he falls back he gazes up at Riot with something unexpected…Trust…right before his head tilts to the side, exposing his gland completely.
“Fuck,” Riot mutters breathlessly as he shifts upwards between Katsuki’s spread legs to give him room just as the black encompasses Katsuki once more and he whimpers. “Present for me,” he commands in a low voice and Katsuki’s scent swaths them once more in omegan arousal. The blonde scrambles to his hands and knees, keeping his hips raised, legs spread and his chest to the nest floor. His fingertips dig into the cushions as he shivers. Riot runs his tongue over his fangs at the erotic sight that puts Katsuki’s dripping pussy on display, showing his complete submission to Riot’s whims. Riot grabs his flushed and painful cock to give it a few relieving strokes, his hand doused in his own precome. He’s typically able to perform for omegas, but none have managed to make him feel like this…like he wants to mount and breed them so full that they burst. He wants to see Katsuki covered in his cum, inside and out, wants to breed him full of a litter and watch him grow as their pups do. He can’t wait to rub over the swell of Katsuki’s belly and smell the sweet milk that will dominate his scent with pregnancy. He needs it more than he needs air.
Katsuki pulls him out of his staring when he wiggles his hips and slick trickles down to the cushions below. “Alpha, knot…” Katsuki whines needily.
Riot leans up over him, running his fingertips over strong defined back muscles and making his omega quiver. “I’ll give you a knot, baby. I’ll give you all the knots you want for the rest of your life,” he swears, grabbing his cock and guiding it between dripping lips so that he can wet his shaft in Katsuki’s slick. Katsuki trembles harder as his scent blasts with his unbearable need. Riot groans as he starts to push inside scorching tight walls, Katsuki fluttering around his girth with a mewl. Even after stretching him on his fingers, Katsuki sucks down on his cock like a vice and Riot has to pause to catch his breath at the tightness encompassing him. His suspicion that Katsuki has not had an alpha knot (at least not recently) is confirmed as he has to struggle to push his girth deeper. Katsuki whimpers and shakes underneath him and Riot can smell the tinge of pain in his scent. With gentle hands he strokes over Katsuki’s lower back as he stills his cock to allow his omega to adjust. Riot is much larger than an average alpha. Most of the omegas that he’s serviced have enjoyed his size, but then again, most of them have a pack already to service them. They just needed help getting pregnant. Riot can’t smell even a hint of pack on Katsuki, the scent pure and undiluted.
He digs his fingers into straining muscles and rubs them until they loosen in his grip. “Pretty omega, doing so well for me,” he rumbles and hears Katsuki’s soft sigh at the praise and tight muscles loosen just a fraction around his cock. Riot’s brow lifts a little at the response and his lips curl upwards with the discovery. He runs his hands up around Katsuki’s thin waist, enjoying how his hands almost wrap around the circumference. “So good, omega. My strong baby…” Katsuki loosens just a bit more so that Riot can slip a few inches deeper. He keeps his hands moving with soothing strokes as more praise falls easily from his lips, knowing that it’s relaxing his omega and opening him up. Katsuki’s scent sweetens the more he talks, the tinge of pain fading into pleasure. “Gonna give you so many pups, baby. You’re gonna be mine forever.”
Katsuki lets out a low moan and finally Riot is able to sink to the root of his cock. “Good boy,” he purrs as he drags his cock slowly back to the tip. The next thrust is still slow but much easier than the first as more slick trickles around Riot’s cock and he carves out space for himself in his pretty omega’s womb. Riot grits his teeth every time Katsuki pulses around his cock, clenching down rhythmically over his shaft each time he rocks back. His hands tighten around Katsuki’s waist when Katsuki starts to roll his hips back to meet Riot’s thrusts with lush groans. “There we go, just like that, Kats,” Riot rumbles, smirking when his omega clenches at the nickname and throws his hips back with a hard clap of skin.
Riot grunts when Katsuki starts throwing his hips back faster as Riot allows him to set the pace. Clearly, his little omega isn’t afraid to work for his knot. Most omegas just generally lie there and leave the work to Riot, but Katsuki falls into a different breed, making Riot grin as he picks up the pace to meet Katsuki’s thrusts backwards. He growls as slick silky walls cling to him and stroke just right over his cock. Light crackles of Katsuki’s quirk start to singe the covers underneath where his nails dig into the cushion of the tatami below. Curious, Riot tightens his grip over Katsuki’s sweat-slick skin and starts railing his cock forward with brutal thrusts. Katsuki squeals at the change as Riot spears inside him while yanking him back to meet his strokes. Plush insides squeeze down so hard that Riot grits his teeth as his knot starts to swell and tap against Katuki’s pussy lips while his heavy balls sway almost violently below him.
Within mere moments, his omega cries out an animalistic sound that sends hardening racing over Riot’s skin just as Katsuki’s cunt flutters and slick squirts in heavy waves around his pistoning cock. “Fuck yeah, baby, just like that. Good fucking boy,” Riot snarls, bending further over Katsuki to wrap his fist in messy blonde hair and jerks Katsuki’s head up, forcing the omega up on his hands and into a cruel arch.
“Alpha, knot!” Katsuki gasps as Riot plows into him with unforgiving thrusts.
Riot tugs him back harder onto his cock, sinking part of his massive knot into squishing tight walls. Katsuki instinctively tries to pull away from the intrusion, but Riot holds him in place. This is the largest he’s ever seen his knot and it’s going to be a struggle to fully pop it inside, but his omega is going to take it. Katsuki mewls when the next thrust forces it further in, stretching his constricting walls past their limits. Before the sound even cuts off, Riot roars and yanks Katsuki back against him and forces it the rest of the way. His omega chokes on air as Riot’s knot swells within plush walls that clamp down with a pressure that makes him buck to bury it deeper. He’s forced to release Katsuki’s hair when the omega’s arms collapse beneath him with a guttural scream that yanks Riot’s release forward by the roots. His balls tighten painfully and he falls forward over Katsuki when cum pulls from him in a violent torrent as Katsuki strangles his knot. “Shitttttt….” he groans as every muscle in his body strains and twitches as he ruts into Katsuki’s pussy, his alpha urging him to completely ruin the omega.
Riot practically smothers Katsuki when the omega can’t hold the weight of his hips up and they both collapse down to the cushions with Katsuki’s legs tucked up underneath him. Riot braces on his hands over Katsuki’s head and flicks his hips as Katsuki’s womb sucks greedily at his knot and more cum gushes from his slit. Katsuki shivers with shaky little mewls as Riot finally lowers himself to nuzzle into the side of Katsuki’s neck and lick at his gland soothingly.
“Alpha,” Katsuki whispers hoarsely as Riot swirls his tongue over oily skin, venom mixing with the oil to create a unique taste. His fangs throb at the intoxicating mix of his and Katsuki’s scents as Katsuki’s plush walls milk a flood of cum from his knot. While Riot typically remains for the duration of an omega’s heat, it rarely takes more than one knot for him to impregnate them. He wonders if that will be the case with Katsuki as well and buries his nose against the gland to scent for the change. He knows that once he puts his bite on his omega’s neck, Katsuki’s heat will be over, so he needs to make sure that his omega is successfully bred before that moment, even if impatience is gnawing at him to lock the hero down NOW.
“Such a good omega for me,” Riot murmurs sweetly against Katsuki’s neck, impossibly more infatuated than he ever was before. “So perfect and strong.” He nuzzles closer over Katsuki’s gland, sucking in deep breaths through his nose while Katsuki shakes with aftershocks. A loud rumbling purr suddenly starts beneath him and he smiles warmly against the skin. Omegas only purr when feeling safe, satisfied, and utterly content. “My baby…” Riot whispers against Katsuki’s ear, making the sound rev louder.
“Babies…” Katsuki suddenly corrects in a hoarse tone, making Riot blink in confusion. Before he can clarify, Katsuki reaches up and wraps his fingers in Riot’s long strands to tug him even closer. “Pups…” he finishes quietly and Riot’s lips flare wide with a victorious grin as he gets the first little hint of milky tinge to Katsuki’s scent. His omega is pregnant and based on Katsuki’s assessment, there’s more than one.
“How many?” Riot asks with barely concealed excitement. Only during the few moments after conception will an omega be able to tell how many pups were conceived before the scent strengthens and becomes less discernable, and Riot eagerly wants to know just how big his little family is about to get.
Katsuki gives a light hum, his nose twitching beneath closed and fluttering eyelids where his face is turned to the side. But then his eyes crack open with a surprising amount of lucidity and his gaze slants up to Riot just as his lips curl into a soft smile. “Three, alpha,” he murmurs in the softest tone Riot has ever heard from him.
Riot resists the urge to crow in victory as his alpha howls with excitement. A full litter… Instead, Riot leans down and presses a kiss to Katsuki’s sweaty forehead while his knot pulses in its velvety sheath. “So good for me, baby,” he praises and Katsuki shivers under the words as Riot shifts to drag his teeth over Katsuki’s sensitive gland. He growls a low sound of approval as Katsuki shifts his chin upwards to create more space, willingly presenting his gland in acceptance.
“Don’t fuck this up, Riot,” the omega suddenly grunts with surprising lucidity.
Riot chuckles, giving a playful nip to the skin. “Omega, I made a promise. It wouldn’t be manly of me to go back on my word,” he says in all seriousness. “From now on, Riot is gone. You can call me Eijirou, pretty mate. I am yours and you are mine.”
“Eijirou,” Katsuki starts to say just as Riot’s fangs sink into the tender skin, making his name hitch in Katsuki’s mouth. Blood and oil coat his tongue as he digs his teeth in harder to make sure his venom is directly injected into Katsuki’s bloodstream. He wants his mark to really scar so that his omega can show it off later. Katsuki bucks beneath him with a breathy whimper as his bite links them together through the bond that will mark them as mates for life. They have a long beautiful life ahead of them…He can already feel it through the happiness radiating through the bond from his new mate.