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The first thing Katsuki sees is the blood…soaking the carpet and splattered over the walls. He was sent in to assess the situation as the primary responder for any situation involving feral alphas. As the only omega hero in the region, he’s the only one qualified to subdue any alpha that has lost control. It’s a proven fact that the scent and pheromones of an omega are more likely to calm the violent beast long enough for them to be detained.
However, this time is different. Katsuki already knows the alpha responsible. “Blood Riot” the media has dubbed him. Katsuki can’t help thinking that the moniker is appropriate and tries to keep the bile in his throat from rising at the coppery tang that is nearly suffocating in the air and has to close his eyes to shut out the images of strewn body parts littering the floor and furniture. He’s seen Riot in action, has battled the monstrous villain on countless occasions…but this…this is something new. Riot is known for his destructive capabilities and has no qualms about taking a life or many. Katsuki has been trying to catch him for years and is well aware of the body count. But as he looks around the convention center, his brain is already speculating. This doesn’t look like Riot’s typical handiwork…this looks like a murderous creature went on a rampage and just started ripping people apart one after the other without rhyme or reason. The burning musk of a feral alpha mixes with the stench of drying blood and Katsuki’s eyes water at the potency as he carefully navigates the gory trail of carnage.
The center is quiet…too quiet as he treads cautiously up the stairs to the mezzanine that overlooks the entry. The center had been packed today for an event…Katsuki isn’t sure what it was for, but he can see where victims had been cut down in their escape, some with their throats ripped out or bellies split open up the middle by razor claws. He avoids the stares of eyes that are now stuck open, the irises starting to turn dull.
He’s seen his fair share of feral alphas since he went Pro three years ago… but this is madness. Usually, he’s able to get to them before this level of aggression can be reached. He just saw Riot yesterday morning after a bank robbery. Their quirks are near evenly matched and it stings Katsuki’s pride, but the villain always has a knack for getting away. However, Riot had been his usual annoying self, flirty and teasing. Katsuki thinks the villain likes to rile him up on purpose, enjoys seeing Katsuki fired up and flustered. Katsuki will admit that the stupid shitty-haired dumbass holds a certain appeal that Katsuki may or may not think about when he’s alone. But…what the fuck happened between then and now? This is definitely NOT Riot’s M.O.
A quiet pained groan pulls Katsuki’s attention from where he’d been gingerly stepping over a body of a woman whose mouth is still gaping open with a silent scream. His eyes scan the scattered bodies around him for signs of movement. “I’m here to help,” he murmurs quietly, not sure where the villain is at this current moment and not wishing to draw attention to himself just yet. “Can you make another sound so I can find you?”
Katsuki’s ears strain as he weaves around more fallen victims, trying to find whoever might still be alive, but his heart sinks into his gut the further he goes without any signs of life. It’s rare that Bakugou Katsuki feels fear, but a shiver rolls down his spine the longer he’s observed by unseeing eyes and watches flesh begin to turn ashy and stiff while blood turns muddy brown from where it expands its darkened reach over the floor.
He nearly jumps out of his skin when his com crackles in his ear. “Dynamight, report in,” a brusque voice demands and he’s forced to turn the volume down.
“No sign of survivors,” he whispers as he reaches the stairs that lead to the center’s main ballrooms. The stairs are wide and carpeted. He thinks the carpet was once a pale yellow, but now it’s nothing but splatters of red. The bodies here are fresher and still pumping blood freely from their wounds.
“Have you made contact?” dispatch asks in a quieter somber tone, clearly reading the mood.
“Not yet,” Katsuki murmurs, silently treading up the stairs and avoiding the pools of dampened carpet. “Almost to the main ballrooms now.”
He nearly buckles and his omega whimpers when he reaches the top of the stairs and the scent of Riot thickens until it’s almost suffocating. In all of his encounters with ferals, never has he experienced one so strong. Strangely the hallway is devoid of carnage, silent and lit up by the windows running the length and casting long shadows along the floor. It’s time for him to make his presence known, but he hesitates with shaking hands. Some instinctual part of him knows that this time will be different somehow. Riot isn’t like the other run of the mill alphas that he’s faced before. Even without the element of his altered mental state, Riot is a fucking tank and it takes everything Katsuki has to go toe to toe with the villain. This isn’t like their usual battles…Katsuki is going to have to coax Riot’s conscious mind back to the surface from wherever he’s sunk down below his beast. Right now, Riot isn’t Riot…he’s a monster that Katsuki is going to have to face and somehow tame.
Doubt eats at him and anxiety slithers through his veins at the prospect of putting himself in the path of this violent force of nature. Usually, the feral state is only activated in alphas who have some sort of triggering life event or have been somehow separated from their bonded mate, causing the beast to rise up and take over. The process usually takes several days to weeks for it to progress. But Katsuki just saw Riot less than twenty-four hours ago. While feral alphas are violent, something of this magnitude is rare and usually only occurs when a feral state goes unchecked for months or even years. It burns in Katsuki’s mind that something isn’t right here. Riot may be a villain and might be a level of unhinged, but this senseless massacre shouldn’t be possible in such a short time-frame.
Hands still trembling, he reaches up and pinches the edge of his scent patch with two fingers and starts to peel it back. His own scent is wrought with anxiety as his omega pleads with him to turn tail and run. Katsuki usually ignores the instinct, but in this particular case, he’s almost tempted to listen. He lets the patch drop to the floor and reaches for the other side of his neck and flinches when he hears a muted roar come from one of the ballrooms. There’s six closed doors spaced along the hallway and he isn’t sure which one the sound came from, but he knows that the alpha is aware of his presence. Feral alphas have an enhanced sense of smell and Katsuki lets his scent out fully, trying to taper back the tang of his own fear and exude something comforting and soothing.
His whole body feels stuck in place when suddenly the third door comes flying off the hinges and shatters in the air before it lands in the middle of the hallway, a heap of wooden splinters and metal hardware. Another ear splitting roar reverberates in Katsuki’s ears and his hands fly over them to muffle the piercing guttural sound that raises goosebumps over his flesh. Katsuki has seen Riot’s “Unbreakable” form before, or he thought he had until today. On a good day, Riot is about a foot taller than Katsuki…Now he eclipses Katsuki like an old world titan as he ducks under the wide doorframe and stands to his full height. His body is a series of jagged shards that jut outwards like spears, hardened muscles bulging into pure sheets of rock. His normally handsome face is contorted into something almost animalistic, a long jagged snout not unlike a wolf's forming beneath his cheeks.
Katsuki takes an involuntary step back as feral solid onyx eyes focus on him with something primordial and predatory while Riot’s lips pull back in a vicious snarl, showing off his razor sharp teeth and long canine claiming fangs that jut out over his bottom lip. Blood still leaks from between his lips and drips from those fangs, explaining why many of the victims downstairs looked like they had chunks missing from their bodies and throats ripped out. Katsuki is afraid to look away from the villain’s face for even a second, all of his hair standing on end as his omega cowers. In this particular instance, he’s petrified and paralyzed in terror, unable to move an inch from where he stands. This thing will rip him apart if he makes one wrong move and if he tries to run, he knows that it will hunt him down. The scent of the alpha alone has him trembling in place. He could try his quirk, but he knows that it will glance right off of the sheer face of rock in front of him. Besides, his purpose today is not to fight, but to subdue. If Riot is allowed to leave this building out of custody, there’s no telling the amount of casualties he will cause until he comes across an omega willing to stand their ground. Katsuki is the last line of defense before unspeakable tragedy. Riot has to be stopped here, no matter the cost.
Katsuki’s throat bobs heavily as he swallows and attempts to curb his scent into something that will calm the beast. It’s a blow to his pride and he’s never had to use it before, but he tilts his neck to the side in submission, baring his gland for the alpha to see. Riot’s head cocks in an eerie movement as he tracks the motion with a pitch black gaze. Usually Katsuki’s scent is enough to stem an alpha’s fury and pull them back from the depths with only a few moments of exposure, an alpha’s instinct to protect and provide usually taking over to soothe them back to sanity…but he has a sneaking suspicion that something is wrong with this particular alpha and his “basic” tricks aren’t going to work here. Just for good measure, Katsuki lets out a shaky omega chirp to let this alpha know he means no harm.
Internally, Katsuki’s gut squirms with fear when Riot takes a heavy step forward, his weight making the floor vibrate with the step. Sharp talon-like claws flex at the alpha’s sides and Katsuki can still see the dark liquid that stains them. The alpha is bare from the waist up and his rocky chest is coated in splatters of blood and gore. His black cargo pants are stretched to capacity around tree trunk thighs and his boots are splitting at the sole where his feet have hardened and started to rip the leather apart by the stitching. Another step makes the floor quake and Katsuki tries to keep himself upright when Riot’s scent shifts from fury to anticipation and excitement, bathing him in the urge to drop to the floor in supplication.
SUBMIT! His omega screams at him for the first time in his life. Katsuki has never submitted to an alpha, his omega having impossible standards and wanting only the strongest and best. If an alpha wanted him, they were going to have to work for it. Apparently, his omega has thrown the book out the window when presented with a life or death situation…and his life very well depends on these next few moments.
“Dynamight, report in. Have you found Blood Riot?” his comm suddenly squawks in his ear and he jumps in response. He knows that he’s made a mistake when the alpha rumbles a warning growl at the movement and shifts into a tense stance to lunge. Katsuki ignores his comm, eyes searching the alpha’s face and trying desperately not to give the predator in front of him any reason to attack. He needs to lure Riot in slowly, get him closer to the scent of an omega and try to draw him up past his instincts. For several moments, they stare each other down, but then the alpha’s lips draw back into another dominant snarl and Katsuki’s omega surges upwards to take the reins, making him drop his gaze to the floor despite his apprehension and itch to keep an eye on the danger. He keeps his neck tilted even as he feels the vibration of two more heavy steps. He can practically feel the alpha’s aura as he now stands within reaching distance. One swipe of those deadly claws would end Katsuki on the spot and his chest heaves with panicked breaths while sweat drips down the back of his neck as his eyes land solidly on Riot’s scuffed and stretched black boots.
Every muscle in Katsuki’s body tenses when there’s a sudden huff of warm breath over the surface of his gland. Fuck. Fuck. Fuck. He nearly comes out of his skin and his scent flares hot and bright in alarm when a rough wet tongue suddenly licks over his gland and up the side of his neck. He shivers with a sharp inhale as it leaves a trail of cooling saliva, knees going weak as the wet textured appendage drags over his most sensitive place. His nose flares as their scents mix in vortex around them and the alpha’s scent morphs with a wave of arousal that makes Katsuki’s omega perk its head up from where it had been cowed even while his nerves amplify from being so close to those bloody teeth. One snap of those jaws over his throat would snuff him out like a light. He hasn’t forgotten why he’s here or what he’s faced with and yet, he feels slick start to gather between his legs against his will in response to the sheer wall of pheromones being sucked in directly to his hindbrain.
Right now, the alpha is interested in him and not killing innocent civilians…that’s what matters. Right? Katsuki can’t think straight when that tongue teases behind his ear and the alpha issues a low growl that feels like it rattles Katsuki’s bones. A confused whimper sneaks past his lips as his insides clench over nothing at the sound. His skin feels like it’s buzzing, a live wire ready to spark at the slightest stimulation. He can’t explain the arousal that is starting to build in his body even as every one of his instincts is blaring with warning. He feels a graze of those sharp teeth over the tendon of his neck as the beast’s snout once more descends back to his gland and he just barely resists whining…whether in fear or arousal…he isn’t sure. What the fuck is the matter with him? His omega is awake and watching, almost holding its breath and unsure of which route the alpha is going to take when that dark musky scent swirls with both rage and arousal. Katsuki is taking it as nothing short of a miracle that the monster hasn’t fileted him open or ripped his throat out. If anything, the alpha is being almost gentle. Perhaps his scent is working…
He’s just getting ready to lift his eyes to get a read on the alpha when a scream rips from his throat as a massive clawed hand suddenly shoves into his chest like a battering ram, knocking the wind out of him as his feet leave the ground. He gasps a pained breath when his back slams against the floor, just barely able to lift his head at the last second to avoid the collision to the back of his skull as his legs kick outward from the impact and pain radiates through him. His eyes clench closed as he attempts to pull a breath into his spasming lungs so he doesn’t see it when Riot lunges forward onto all fours and instantly cages him beneath his hulking size with a nasty animalistic snarl. Sharp talons instantly tangle in his hair and Katsuki’s eyes fly open just as his head is jerked upwards and to the side. He’s still choking on air as horror floods him when Riot’s snout dips in towards his neck. He braces for the pain, images of those fangs ripping into his throat and tearing it out flashing before his eyes. He starts to thrash wildly to get free and his quirk lights against his will as he braces his palms over Riot’s rocky chest. Light flashes with muted booms against the surface, but all it does is ricochet the impact back into his wrists and make him cry out at the pain. His hair is tearing at the scalp as he struggles against Riot’s grip, but another guttural roar right next to his ear makes his whole body freeze in place as his blood runs with ice. Oh my god…he’s going to die here. Riot is going to rip him to shreds and he won’t be able to stop it. A brief image of Riot’s devilish smirk flashes in front of him, garnet eyes shining bright as he teases Katsuki with some insufferable innuendo. Shit… Katsuki closes his eyes, holds his breath, and prepares for the inevitable.
That hardened snout brushes briefly over the skin of his neck with a deep grating inhale and this time the fearful whine escapes, but it tapers into something altogether different and Katsuki arches up off the floor as the alpha notches their necks together and their glands glide over one another. Neck scenting is reserved only for mated pairs for a reason. It’s incredibly intimate and the pheromones absorb directly into the blood stream to create a pseudo bond between the pair. Between the scent wrapping around him and the direct flood of arousal pheromones, Katsuki’s omega rolls belly up as desire torrents through him. That hardened snout nuzzles into his hair with a chuff while Katsuki squirms and soaks through his uniform.
He knew that neck scenting was powerful, but his eyes flutter and roll from the intensity barreling through him. He can’t focus, can’t think…He knows his mouth is open and moving. He thinks he’s saying something, but he can’t make out his own words through the rushing in his ears. He feels like he’s going to rattle out of his skin as the alpha continues to rub their oils together and their scents combine into something intoxicating that fills Katsuki’s lungs and makes him feel high. His omega is clawing inside him, eager and frothing at the alpha’s attention.
Vaguely, Katsuki knows he’s in deep shit…By mixing their pheromones, the alpha has cemented a sort of biological claim on Katsuki’s omega and now he’ll be subject to pleasing the alpha on an imperative level. But right now, all he can do is accept it as the alpha growls and guides Katsuki’s head to get them closer together. A breathy moan falls from his tongue while his nerves light up and suddenly he can’t get close enough, arching upwards to feel more of that jagged texture against his heated skin. He shudders with a high-pitched whine when his pelvis grinds against the alpha’s front, meeting a rock hard heavy bulge that is unmistakable even through the layers of fabric between them. More slick gushes between his legs as he uses his feet to roll his hips up further to rock over that massive appendage that feels as thick as his arm through Riot’s pants. Oh god…he needs that inside him. Needs to feel it split him open and stuff him full.
His own scent is a neon sign as it shifts from terror to full-blown needy arousal and he can tell when the alpha notices by the deep huffing sound and accompanying low snarl. Katsuki’s hands crackle against the alpha’s chest when suddenly Riot drops his hips and ruts his monstrous cock directly between Katsuki’s legs.
“Dynamight! Report in!” an annoying voice in Katsuki’s ear shouts, but he ignores it in favor of scratching his blunt nails over a rock hard chest and groaning at the sudden rough friction over his core. It’s too hard…too rough…it’s fucking perfect. “Please…” Katsuki finds himself pleading in a scratchy whisper, nearly desperate to remove the barriers between them. His damp pants are clinging to him now and all he can think about it Riot fucking into him like an animal and breeding him violently. He wants it. He needs it.
He nearly lets loose a snarl of his own when the alpha suddenly releases his hair and Katsuki’s head flops back to the floor as his hands drop from a hard chest. Before he can rear up and protest the sudden bereft feeling, he squirms as talons press just above his neckline and swipe downwards, leaving trails of fire in their wake. He cries out at the sudden pain as his uniform is shredded beneath the alpha’s claws, his skin opening up where the points have dug into his flesh. The pain clears his mind just enough for him to meet that obsidian gaze and see the hungry look on the alpha’s face with lips pulled back into an almost sinister smirk over those carnivorous teeth. The talons catch on Katsuki’s belt for only a moment, before it too gives way under the assault. Blood begins to well over his chest and abdomen where the alpha’s claws had split his skin. He can tell immediately that it was just deep enough to make him bleed, but not enough to seriously injure him. Already, the pain has begun to fade as the alpha’s scent billows over him and calls to his omega in a primal way. He flinches when Riot yanks at the shreds of fabric still covering his body, ripping them away as if they were nothing more than paper mache. Cool air gusts over Katsuki’s skin, making goosebumps rise over the heated flesh and tingle against the residual sweat from his fear.
“Dynamight! Have you found Blood Riot? Report your status!”
Riot lets out a bloodcurdling roar in response to the sound that was loud enough to garner his attention and suddenly his snout is right in Katsuki’s face and those bloodstained teeth snap in warning. Katsuki reaches up slowly, telegraphing his movements, eyes never leaving the alpha’s as he pulls the com from his ear and tosses it to the side. Riot’s gaze glints with surprising intelligence despite his feral state and Katsuki feels trapped in obsidian pools that barely blink. Heat and rage still swirl around them in a maelstrom of erotic scent as Riot stares down at him, rocky muscles almost grinding together as his chest rises and falls in a steady rhythm. It’s rare that Katsuki truly feels small, but as Riot slowly creeps back from his face and straightens, Katsuki shivers at how tiny he feels by comparison. He feels like a rabbit caught in the jaws of a wolf…
Fear still dances under his skin, the beast poised above him and calculating. Katsuki can see it in the alpha’s expression, can smell it in his scent. It’s as if the alpha doesn’t know which piece of meat he wants to chew on first. Katsuki squirms under the intense gaze, torn between feeling exposed, left in nothing but his boots, and being frightfully aroused. Riot leans up further onto his knees, tucking his two thumbs under the waistband of his cargos and tears through the fabric with ease, dragging the talons down to mid thigh and Katsuki sucks in a sharp breath as the top half of the pants splits apart, freeing Riot’s monstrous cock, which flops down under its own weight and girth, looking veiny and swollen with little ridges of his quirk’s effect as it hangs down to mid-thigh. It's as thick as Katsuki’s forearm and settled just behind it are a set of hanging globes that are still swaying with Riot’s movement. Roughly the size of small grapefruits, Katsuki’s core clenches as his scent-addled mind dreams of how much cum will spew from balls like that. His omega stirs and crawls up his throat and makes a chirp of invitation, coaxing the alpha into action.
He isn’t disappointed when sharp claws suddenly dig into his hips and he yelps as he’s violently flipped to his stomach and his hips are brutally yanked upwards. He barely sucks in a breath, face smashed against the carpet and hands scrambling for purchase when Riot plunges his cock in all at once. What little breath Katsuki had achieved gusts out of him in a scream as he’s brutally split open over Riot’s girth. The beast hunches over him, caging him in, while he squirms and writhes at the mix of pain and pleasurable fullness. He bucks when he feels the head slam against his cervix, which stops Riot from delving deeper. Katsuki trembles at the overwhelming sensations bombarding him, tears crawling from his eyes even as his omega purrs at being filled by a big strong alpha. He claws at the floor when Riot makes a menacing snarl, cock dragging thickly through Katsuki’s clinging walls. An inhuman screech tears from his throat when Riot ruts his cock forward hard and fast. Agony flares hot and bright when the alpha’s hardened tip spears through the feeble fleshy barrier to his womb. Katsuki’s omega surges to the front and his nails protract to tear into the carpet as he sobs and the skin of his belly distends outwards as Riot’s length keeps fucking going. Darkness dims his vision and a high-pitched whine stutters from his lips. Panicked and pained breaths rattle in his lungs as he struggles to stay conscious while his nerve endings sear and sizzle.
Even through the blood rushing in his ears, he hears the alpha above him chuff in pleasure as the cock inside him blissfully stills. Katsuki focuses on the heavy weight pressing deep into his womb and the stretch of his bulging belly, trying to distract himself from the echoes of pain still radiating from his core. His head feels fuzzy as the pain starts to fade and he clenches his eyes closed against the room spinning around him. A breathy sigh pulls from his chest when a hot tongue drags over his gland, making him shudder and his arousal perk up from where it had wilted from the shock of being impaled.
“Pretty omega,” a dark grating voice rumbles above him and Katsuki’s eyes fly open. Feral alphas never speak, too lost to their instincts to even form a cohesive thought. Then, his nostrils flare as Riot’s scent evolves around him into something more wild and musky. Katsuki sucks in a deep breath of the addictive scent, the warning flashing boldly in his mind. The scorching scent of feral had masked the underlying scent…one that would have originally had Katsuki demanding the heroes find another omega. But now that Riot is so close and his cock is buried inside him, Katsuki can smell it. Rut… Riot is not only feral, but also in fucking rut, which makes him a thousand times more dangerous. It means that Riot’s alpha is violent and unpredictable while also obsessed with breeding a warm cunt and claiming a mate.
Katsuki panics and starts to thrash beneath the alpha. Taking a dick to calm a raging feral alpha down is one thing. Claiming is a whole different ball game. Fuck. Fuck. Fuck. Katsuki struggles and claws at the carpet, managing to jolt forward and pull himself partially off the cock splitting him open and forgetting entirely that Riot could shred him to pieces in mere moments. If exposed to an alpha’s rut pheromones long enough, an omega will initiate a breeding cycle and ]will go into heat in preparation for breeding and mating. He’s on suppressants and as long as he stays away from alphas in rut, his body won’t have natural mating cycles, rendering him infertile. It’s been at least a year since he’s had one…but now that he’s been exposed…it’s only a matter of time before he succumbs and his omega makes the decision for him. He has to get out now!
His omega cries out for him to stop, wailing as he pushes up on his arms and pulls further off of the alpha’s thick cock in his frenzied anxiety, his own scent nearly acrid. He’s almost to the tip when talons wrap tightly around his exposed throat and yank him back. A choked sound gurgles from his throat as his pussy squelches when that ungodly cock once more rams into his belly.
“Submit!” Riot roars next to his ear and Katsuki falls limp like a marionette with its strings abruptly cut, head attempting to tilt to the side even as sharp talons dig into his skin and rivulets of blood run from the punctures. His arms crumple beneath him, but the alpha’s hold on his neck tightens and he’s pulled upwards until his back slams against the rocky swells of Riot’s chest and his weight pulls him down further onto Riot’s length until his slick pussy lips kiss the top of a knot just starting to form. Katsuki whimpers as Riot’s cock twitches within him and blood drips down to join the smears across his chest and abdomen. Riot’s pointed talons slowly pull from his skin and Katsuki’s omega slowly claws its way up inside him with the command keeping him still. More of Riot’s dominant virile scent wafts into his nose and tingles all the way down his throat. He’s losing the battle and fights just to stay lucid, even as sweat breaks out over his body and he gasps as Riot’s massive palm settles over the absurd bulge of his belly and presses down. Katsuki squirms as it intensifies the feeling of fullness and his omega crows with the notion of being bred. Katsuki has always stifled his instincts, focusing instead on his career and advancing in the ranks. He doesn’t have time for a mate and pups…but…it feels so good…
A long tongue drags over his gland again and Katsuki inhales sharply as Riot grinds his cock upwards. Katsuki’s hands fly to the alpha’s wrist where he’s still palming Katsuki’s navel, just to anchor himself as waves of pleasure roll through him and slick leaks around Riot’s buried cock. His head tilts back automatically against the beast’s hardened chest, breaths picking up as his temperature rises like a rapid tide and his heartbeat pounds behind his ribs. His panic ebbs away from him, just out of reach as his omega pleads with him to let go. Alpha will take care of us. Breed us. Claim us. Pup us… it insists. Katsuki tries to argue, but another roll of Riot’s hips scatters his thoughts into the wind as it rubs against every sweet spot inside him at once. Hot air gusts from the alpha’s snout against his ear and he moans as it feels like fire razing over his rapidly heating skin. He bucks upwards when the alpha opens his maw and licks up the tendon of Katsuki’s neck before retreating back down to lave over his gland with surprisingly tender strokes. “Mine,” the alpha snarls viciously against his skin as the alpha’s grip over him drags sharp talons scratch across his belly until they dig into both of Katsuki’s hips. He groans as he’s lifted up on Riot’s cock, every delicious ridge dragging through his tender entrance in a unique sort of torture. Anticipation makes him clench as fluffy cotton filters into his head.
He squeals as he yanked downwards and filled to the brim once more. “Fuck!” he gasps and tries to inhale, displaced slick drooling down his thighs. Riot lifts him again with a low growl and pulls him down harder. It becomes a pattern as Riot lifts Katsuki like a limp ragdoll and fucks him down over his cock like a toy over and over again. Katsuki feels himself dissolving with every brutal thrust as his sounds turn raspy with need and the fever inside him is stoked into an inferno. He knows the fight is lost, but still he tries with every last fiber of his resolve despite the pleasure and arousal enveloping him… “Riot,” he gasps in a last hail Mary. “You’re in a feral rut. You can’t do this…”
Katsuki grunts in shock when he’s suddenly wrestled belly down on the ground with his ass once more in the air, that massive cock never pulling out for even a second. His stammered moan echoes in the wide hall when Riot starts to piston inside him like a machine. Katsuki starts to shake as the new angle drills over his sensitive spots and his belly surges outwards as Riot’s cock rams against it from the inside. Tension builds quickly, molten and explosive… “Riot! Stop!” He screams in a last ditch effort to get through to the man beneath the beast, but his plea goes ignored as his nails rake into the carpet while sweat pours down his face. His omega is practically smug as they’re plowed into the ground, carpet scraping over his wounds and staining it with his blood. Riot and Katsuki’s omega are conspiring against him…and for the first time in his life, Katsuki fears that failure might feel good.
As if Riot can sense his pending surrender, the alpha lets loose a victorious howl that shoots straight to Katsuki’s cunt and makes it pulse as the tension within him snaps, blinding him with light and heat that seems to spiral outwards from his core. He arches with a mewl as slick drenches the carpet below and the alpha behind him. He can’t think as his omega shoves him down deep deep deep…until all he can sense is the overwhelming pleasure of his alpha breeding him.
Riot’s knot is swollen and obscenely large as it rams against his pussy lips. He needs it inside…He needs to be full…needs his alpha to stuff his womb with cum and fuck him full of pups. “Alpha, please!” He squeals as his pussy continues to squish and squirt every time Riot slams into him. Feels so good…Don’t stop. Never stop. Please. Please. Please.
He nearly levitates off the floor when his alpha’s knot starts to push through his tight entrance and his hips rock backwards, trying to coax it inside. His skin feels like it’s melting, but somehow he knows that his alpha’s cum will satisfy the clawing itch inside him. Talons dig into his hips painfully, blood dripping down his thighs, but it only takes him higher into ecstasy. “Please, alpha. Knot!” he begs through heaving humid breaths.
Riot roars behind him and it’s the only warning he gets before he’s yanked back painfully as Riot gives a sharp fatal thrust forward. A bloodcurdling scream reverberates around them as Riot’s fat knot crams through his dripping opening and his belly stretches thin as his alpha’s full cock is submersed. Katsuki hyperventilates and squirms as the knot expands to lock them together, stretching his walls past their limits. Thick liquid warmth floods directly into his belly and his omega luxuriates as the volume quickly fills up the available space and begins to bloat his skin outwards. In his muddled state, Katsuki can’t quite put his finger on why it feels different than when others have cum in him in the past, but he squeezes down tight on the knot, eager to coax more forward. Everything feels warm and heavy as his alpha weighs him down with cum, filling every crevice within him.
Katsuki doesn’t even flinch when talons wrap in his hair and yank his head up from where it’d been resting against the floor. He doesn’t fight when he feels the alpha’s sharp snout nuzzle over his gland while a long wet tongue drags over the surface. His lips curl upwards, dopey and fucked out as lethal teeth close over his shoulder. The pain barely registers when long fangs breach his tender gland and sink deep into his flesh. His pussy clamps down hard when the venom stings in his veins and he can feel it arc like electricity through his body, making him bow his back and rake his nails through the carpet beneath his palms. More teeth sink into his flesh to make their mark and the pain sends him higher into a cloud of euphoria so vast that he feels like he’s drowning in it. Light feels like it radiates from his very pores as the bond settles into place and his alpha’s presence enters his mind. He reaches out for it with his very soul and wraps around it to nurture the bond, accepting it as a part of him.
—
Katsuki blearily blinks his eyes open slowly to the feeling of warm flesh cocooned around him and soothing fingers stroking through his hair. He feels achy everywhere, but happy and satisfied, not yet willing to rouse from the comfort of his alpha’s arms. He tilts his head into the soft touch against his scalp and reaches shakily to grab the arm laid over him and tug it down tighter. He can feel his alpha at the back of his mind and his lips curl upwards at the sheer contentment and adoration he finds there. For once, there’s no worries or commitments tugging at Katsuki’s mind as he revels in the simple presence of his alpha and the fullness of his belly. A purr vibrates from his chest in happiness…
“Fuck, never thought I’d hear that sound from you…” A low familiar voice rumbles behind Katsuki, jerking him out of his groggy state as memories and images of what transpired flood his mind.
“Shhhh…it’s okay,” the alpha soothes in a calm voice, clearly sensing Katsuki’s confusion through the bond. “You’re okay. You’re safe. I’ve got you…”
“Riot?” Katsuki rasps, trying to summon his anxiety and defenses from earlier, but finding them curiously absent.
“Right here, omega. The quirk is gone,” Riot reassures quietly, raking his nails softly over Katsuki’s scalp and making the purr in his chest intensify. Fuck, this feels good… Katsuki can feel Riot’s amusement over the bond when Katsuki scooches back further against him, eliminating any semblance of space.
Riot tugs him even closer, locking his arm tightly over Katsuki’s middle. “Quirk?” Katsuki mutters, so tempted to fall back asleep. He knows that he’s covered in blood and his belly is obscenely distended. It’s strange that he doesn’t feel cum leaking between his legs now that his alpha’s knot is absent. He reaches down curious and feels between his legs. His omega purrs at the thick cream that coats his fingers. Fuck, it’s so thick it looks like pastry filling. He groans quietly while his omega’s purr grows louder.
“Got into a fight with another villain,” Riot murmurs, clearly watching him as humor floats through the bond, pulling Katsuki back to the conversation at hand . “Was headed home for my rut and the bastard was badmouthing you. Guess you busted him like a year ago or something…couldn’t let it slide. A friend of his at the bar touched me and my quirk suddenly went off without my control. I thought that was the end of it…but I don’t remember much after that. I get flashes of what I did though,” he explains quietly and Katsuki feels remorse suddenly blare through the bond. Shit… Katsuki’s own memory scrolls through the images of all the bodies downstairs.
“I’m not walking out of here, omega,” Riot suddenly mutters sadly. “Finally got your attention though…”
“Riot–” Katsuki starts, but suddenly the sound of stomping boots calls his attention away from what he was about to say. Katsuki tenses and feels Riot do the same. He should be angry and fighting the alpha behind him, but all of his protective instincts flare at once and his purr is replaced by an animalistic snarl.
Riot’s arm grips him tighter. “Don’t wanna go just yet.”
Katsuki’s omega roars in offense. “You’re not going anywhere, alpha.”
A hoard of his colleagues suddenly appear at the top of the stairs and Riot is suddenly forced away from him by a flurry of crimson feathers.
“Shit! Dynamight are you okay?” Hawks shouts as he skids over the floor to where Katsuki is laying, swollen with his alpha’s cream and covered in bruises, scratches and drying smears of blood. Deku is babbling at him. “Kachaan you’re hurt. Just hold still. Med team is on the way. Oh my god… there’s so much blood. Just hang in there.”
Other heroes crowd around him and he hears Riot growl when Sero’s tape suddenly binds around him, pinning his arms to his sides while Ashido slaps quirk canceling cuffs over each wrist. Kaminari sends an electric shock through him that makes him convulse and wobble over his weakened knees. It all happens so fast that it takes Katsuki a moment to process that he no longer feels warmth at his back and the bond pings with his alpha’s fear, pain, and regret.
Something inside him snaps when he turns his head and his alpha is violently forced to his knees by Deku in a blur of green lightning. He sees Deku’s fist cock back, backlit in neon arcs and poised above his alpha’s face.
Katsuki’s omega rips its way to the surface, vision flooding with red haze. Claws tear from his fingertips and his lips draw back in an animalistic snarl. Protect alpha. Enemies. Kill them all. Before he’s even aware of it, he’s rolling his heavy body to his feet and he’s lunging, palm sparking. They’re going to take his alpha away.
Deku barely notices in time just before Katsuki’s palm ignites and blurs back away from his alpha to avoid the lethal shot. “Get the fuck away from my alpha,” Katsuki roars, trembling with fury as his scent scorches the air with its intensity.
“Kacchan, this isn’t–” Deku pleads, hands in front of him in a placating manner that just pisses Katsuki off more.
Katsuki advances several steps, calculating, his gaze bouncing between each hero’s widened gaze. Another vicious snarl tears from his throat as red feathers suddenly wrap around his wrists. Before they can cement their hold, he blasts a cluster shot that incinerates them. His head swings to Hawks over his shoulder as he aims a glowing palm. Hawks shoots into the air, but it’s too late as Katsuki’s anticipation beats the bird to the punch. Hawks is thrown backwards by the blast and crashes through one of the hall's many glass windows with a birdlike screech. Deku uses the distraction and speeds in close, but before he can even touch Katsuki to restrain him, Katsuki’s other palm slaps to his chest and ignites, sending the hero flying through the air in a wave of heat and flame until he slams into the opposite wall at the end of the hall and crumples into a broken heap on the floor.
“Katsuki! Stop!” Ashido screams and starts towards him. Katsuki roars, fangs lengthened and sharp as he hurls towards her and tackles her to the floor, razor claws shredding through her chest. He bows in place from where he’s poised over her when his nerve endings flare with the volts of electricity suddenly bolting through him from where a hand has latched over his shoulder. His hand is shaky as he sends another fiery blast over his shoulder and hears a grunt of pain as Kaminari lands in a smoking heap several feet away.
His ears prick at the shouting all around him as Ashido lays whimpering beneath him. He takes a swipe at her face, watching his claws tear through pink skin like butter before he rises once more to his feet to face the other heroes rushing into the hall. A wall of explosions lit one after the other slams them all off of their feet and sends them rolling and tumbling down the steps.
Satisfied that the threat is neutralized for the moment he turns to his alpha, which is watching him carefully and Katsuki grins at the pride that suddenly flares brightly through the bond. They’ve pleased alpha. They’ve been good for him. Katsuki doesn’t say anything, his teeth feeling too large for his mouth as he snaps the quirk cuffs free and slices straight through the tape binding his alpha. Riot slowly gets to his feet and reaches out for Katsuki’s face and Katsuki readily nuzzles into his large palm.
“Katsuki…” he murmurs. Katsuki purrs at the soft tone as the alpha speaks his real name for the first time. “Such a strong little mate…perfect omega. So good for me,” he rumbles, pulling Katsuki closer and leaning down to press a kiss to his forehead.
Yes. This is right. His alpha belongs with him. “Mine…” Katsuki growls, tucking himself into Riot’s chest and leaning up on tiptoes to nuzzle into the alpha’s gland. Mate. He can feel the creamy cum starting to drip slowly down his thighs as one of his alpha’s palms rubs possessively over his bloated abdomen. He has no doubts that his alpha bred him properly. Soon they’ll have a litter on the way and Katsuki purrs louder at the prospect.
The hall is now silent as hardened hands suddenly brush down his spine. “Mine,” Riot agrees in a low growl of his own, petting down Katsuki’s back and soothing his feral omega.
Nothing else in the world matters as his alpha bends down to loop strong arms under Katsuki’s legs and lifts him into the air. “Fuck, you look hot when you’re feral,” Riot purrs, pressing another kiss to Katsuki’s head. “Gonna have to thank the prick that quirked me. Never in a million years thought I’d get to have you…but you’re mine now, omega.”
Katsuki buries his nose against his alpha’s scent, huffing in deep inhales as his omega settles back inside him. It feels like home in his alpha’s arms. They’re moving now, Riot navigating around the unconscious and injured bodies of Katsuki’s previous comrades. He doesn’t care for the groans and whines of pain that he caused. All that matters is the love and pride radiating through his bond. As long as his alpha is happy, Katsuki will do whatever his alpha commands. He’ll kill all of their enemies to keep this floating feeling of serenity and belonging. He belongs to his alpha and his alpha belongs to him. This is always how it was supposed to be…