Work Text:
The door slams open and close and Midoriya jumps at the sound. Bakugou must be home, but he’s angrier than normal. They have been roommates ever since they graduated from UA, since Bakugou had nowhere to go and Midoriya had the courtesy of letting him stay with him. They’re just normal rival friends now, Bakugou never gets physical with him unless they’re messing around. He still has a horrible temper, but he’s matured. Both of them pine over each other like idiots, but they are too stupid to do anything about it.
Midoriya peaks out of his room and watches the hall for Bakugou. He can hear his angry stomps and— wait WHAT .
The first thing he notices is his ears. That are NOT human. They’re fucking wolf ears. He has a fluffy tail too. And long nails. And fangs. Bakugou is fucking seething and angry but it’s weirdly cute.
“Pfffft—“ Midoriya starts chuckling.
“SHUT UP! I got hit by a quirk and it’s not going to go away for days!” Bakugou growls. Midoriya still cannot contain his amusement.
“Awh, Kacchan, do you need a bone to bite on? I can get you a little doggie bed!” Midoriya grins. Bakugou’s fluffy ears go down, like an angry dog, and then POUNCE. Midoriya yelps and they go crashing down. They struggle against each other until Midoriya slips his hand against his ear and Bakugou growls.
Not a mean growl, like a purr. Midoriya scratches his ears and a whine escapes Bakugou’s lips. Midoriya gasps and his cheeks heat up. “Kacchan, you’re so cute!!!” Midoriya coos.
“I’m not cute, goddamnit…” Bakugou growls, but his animalistic traits due to this quirk overpowers him and he leans into Midoriya’s touch.
“Hehehe, you can’t lie to me anymore! You’re just a gullible doggie!” Midoriya cheers. Bakugou huffs and snarls but again, his tail wags against the floor.
----
A scream rips through the house and Midoriya jumps from his desk. It came from the shower. Midoriya runs to the shower door and opens it without thinking. He gets a full frontal of Bakugou’s naked body because the curtain is completely open. Midoriya screams in absolute horror and covers his eyes. Bakugou is showering, and also jacking off? The glimpse of what Midoriya saw was definitely lewd and his dick was hard.
“Why’d you fucking burst the door open, idiot?!” Bakugou shouts, covering himself even though Midoriya has his eyes completely shut.
“Because you screamed bloody mary!!” Midoriya yells back.
“Because my dick looks fucking weird!!” Bakugou screams. Huh?! They both go quiet and the shower faucet pounding on the shower floor fills the silence.
“I need more information, Kacchan!” Midoriya groans, sighing.
“It’s swollen?!” Bakugou says confusedly. Midoriya feels even more heat rush to his face. This is not happening right now.
“Well— that’s normal if you, uh, y’know…” Midoriya stutters. They are both so mortified that this conversation is even happening, but stranger things have happened. Bakugou just sighs.
“Yes! I was, but it’s not normal! I know what a normal dick looks like and this is not it!” Bakugou says. “Everything was normal until I was… y’know.”
This was complicated and frustrating because Midoriya doesn’t know what the fuck he’s talking about! Maybe he should just…
“Kacchan, can I just… look at it? It’s probably due to the quirk, I won’t make it weird!” Midoriya flushes.
“For fucks sake, whatever!” Bakugou says, but it’s not whatever because his heart is beating out of his fuckin’ chest. Midoriya slowly takes his hands off his eyes and avoids eye contact with Bakugou. The scene displayed in front of him is almost too much. Bakugou is flustered too . His muscles look good dripping in water and his tail and ears are patted down with the liquid too. Midoriya’s eyes travel towards his V-line and the hair that grows there too. Whew. He’s bigger than average, for sure and the tip is rosy. What catches his attention is the bump on his cock. Midoriya instantly knows what it is and he literally malfunctions.
“Kacchan… you got a knot from the quirk,” Midoriya mumbles. He doesn’t dare to look at his eyes, so he fixates on the floor.
“The fuck is that?!” Bakugou questions.
“It’s a gland that swells up when a dog breed is aroused… it does that because to lock inside a vagina or anus…” Midoriya coughs. God, this was horrifyingly embarrassing for both of them. “It, um, won’t go down unless you ejaculate and even after, it stays for a bit.”
“I have a dog’s penis, is what you’re telling me,” Balugou eventually deadpans.
“Um, yes..?” Midoriya says, finally looking up at Bakugou.
“Fuck, just get out!” he finally snaps, and Midoriya obliges quickly. He stays next to the door, frozen in embarrassment and awe of what just happened. He saw Kacchan’s dick. And he has a knot now. Midoriya shamefully looks down to see his own little fellow sprouting a boner. Was it really his fault? He just wanted to know what it felt like inside of him. His size is already big enough, and that knot would keep him in. He feels his legs wobble and he rests his head on the door without thinking much. The sounds of inside become more clear though, and he hears Bakugou.
“Ha-ah… mnn f-fuck!”
Oh wow. Okay. Midoriya’s dick twitches when he hears those groans. There were times where Midoriya would wake up to Bakugou’s loud groans in the middle of the night (Bakugou purposefully did so) and Midoriya would just end up jerking off too. But, they were a door apart. It was dangerous. Yet, Midoriya’s hand already is down his pants and the other hand is cupping his mouth shut.
Those sounds were intoxicating. Bakugou’s low groans and the slippery sounds of his skin. Midoriya did everything to keep it together, but he couldn’t help but whine into his hand and thrust pathetically into his hand. “Mnnn, please, fuck fuck--!” Bakugou cries. He sounds wrecked. Hearing that for Midoriya was almost too much because he sounded desperate . Midoriya would kindly lend him his body if he asked, he sounded so sad, like a sad dog. His thoughts are soon crashed by another bang in the bathroom, but it sounds more of a punch against the wall.
Midoriya jumps and yanks his hand back and stumbles away from the door. He can still hear a curse and, “Stupid fucking dick!” Bakugou couldn’t cum. Midoriya gasps a little in pity, but scurrys back to his room because there was no way he’d risk the chance of Bakugou seeing Midoriya’s hard on. He locks the door for safe measure because he wasn’t going to just torture himself by not getting off.
It wasn’t like him to get off during the day, he never did, he always waited until Bakugou was sleeping because he didn’t want to get caught. Thank god for his heavy sleep. But, he’s too worked up from all of this. He waits to hear Bakugou leave the bathroom and then go somewhere else in their house. He then reaches under his bed and pulls out a container with all of his toys and lube. He wasn’t big on kinky stuff since he was extremely flustered to that type of things, but Ochaco and Mina always ended up dragging him to the nearest sex store to treat each other.
Midoriya grabs his strawberry scented lube and an orange dildo that he assumed would be the length of Bakugou’s cock. Now that he’s seen it, the dildo seems smaller, but still similar. Midoriya hurriedly takes off his pants and boxers which makes his pink cock spring out and twitch. He’s already dripping with precum due to Bakugou’s growls and just thinking about so makes his stomach twist in lust. He gives his dick a few strokes to relieve the throbbing, and then pours lube on two fingers. He then presses his face into the hardwood floor, propping his ass up in the air. He slides the lube next to the container and lathers the lube on his asshole.
It already feels really good, but Midoriya can’t be too loud. He can hear Bakugou in their gym room, across from Midoriya’s room, probably letting out his pent up frustration. That makes it hotter, though. Bakugou isn’t that far away, panting and sweating too. Though, Midoriya is doing another type of exercise. He pushes one finger in and a grunt resonates in his throat. His freehand goes to prop himself up to get some control. He stretches himself open with one finger, and then popped a second one in.
The burning feeling wasn’t new, it actually made him excited because of what always followed through. Once his hole was accustomed to his finger, he starts scissoring his fingers for more access. It started to feel really good now, and Midoriya couldn’t stop from whimpering a little. He thinks he’s ready, so he pushes himself up and suction cups the orange dildo to the floor. Then, he hovers over it and slowly sits down.
“Fuuuuuck…” Midoriya drawls out quietly. It feels so good to sit on a dick and be spread open like that. Once he reaches the base of the dildo, he exhales. It’s a lot for his cute little ass, so he wonders if Bakugou’s dick would wreck him. It probably would. He starts slowly bouncing on the dildo and invisions it’s Bakugou’s. “Yes, yes,” Midoriya starts to lose more of his composure. His bouncing became sloppier, and so was his hole. It was squelching and open from the slick dildo. Midoriya tilts a little backwards and a shooting pleasure jolts up his spine. He accidentally yelps, but quickly slaps his mouth shut. He stops entirely to try and hear if Bakugou stopped working out and might’ve heard him, but his brain is too clouded.
His hips move by themselves again, wanting to feel that intense pleasure again. He slams down harder this time and the pleasure blinds him again. Midoriya dryly screams against his hand and his self control is gone. He wants to be ravaged, wants to be split open by his Kacchan, but he couldn’t, so now he’s projecting his thirsty fanatasies onto this dildo and now especially since he fucking saw Bakugou naked. “Ah ha-ah mnngh, Kacchan, yes, yes,” he moans. He thinks he’s quiet, but is he really?
No. Because on the other side of the wall was the hall, where the gym is, where Bakugou was, about to end a phone call with Kirishima.
“Yeah, whatever. Gotta go, Deku sounds like he’s dying,” Bakugou says, sighing and ending the phone call. He drops the dumbbell he was holding and places his hands on his hips. He had just called Kirishima, since Kirishima was with him when he was hit with the quirk. Kirishima caught on that he’s had some troubles with his genital area, and Kirishima just laughed and said, “Guess you have to mate like a dog does!” Bakugou scowls and rolls his eyes. He’s not a fuckin’ dog! As much as he thinks that, the primal urge to fuck was overwhelming him too much.
Bakugou snaps out of it once he hears another strange noise from Midoriya’s room. For fucks sake, is he watching a movie or just muttering stupidly? Or maybe something could be wrong. Bakugou wipes his sweat with a towel and walks out into the hall.
“Kacchan!~”
Bakugou is suddenly filled with worry. He sprints and barges into the room. He unknowingly breaks the lock off with it.
And there Midoriya was!
In no harms way!
In fact, he was sitting on a dildo on the floor next to his bed! Completely flustered, bottomless, disheveled and in pure ecstasy. What is with them and accidentally walking into each other today? Midoriya jumps off his dildo and screams. Bakugou kind of shuts down.. Though, his bloodstream seems to work perfectly, darting straight to his cheeks and dick. Midoriya covers up with his two hands.
“Oh,” is all that Bakugou manages to get out. Midoriya starts panicking and flings the dildo back under the bed. And then something in Bakugou’s brain switches. Like a flip switch. His nails start to grow and his fangs shine brighter. Then, he goes on all fours. His tail raises up and his ears are positioned back.
“Kacchan, wh-- AHH!”
Just like that, Bakugou pounces on Midoriya and slams his lips against his. Midoriya can’t think, what was he supposed to think?! Bakugou just went feral after seeing him fuck himself on a dildo and is now kissing him. Fuck, he’s kissing him! Bakugou forces Midoriya’s lips open and practically takes his soul away. He’s licking and sucking, and Midoriya does the same because it's Kacchan. He’s always wanted this. Midoriya ends up wrapping his hands around his torso and Bakugou growls. He pulls away to literally rip his shirt in half. His nails are extremely sharp and his biceps are already bulging from his strength.
Bakugou pushes him back and bites his neck. Midoriya moans and arches his back. His fangs sink in just enough to make a purple bruise. It felt so good and Midoriya can’t think. Bakugou can’t think either, his mind is clouded and foggy with the words breed breed breed reverberating in his head. “Kacchan, what are you-- oohffffuck,” Midoriya gasps. Bakugou stops him from speaking by stroking his dick. God, he feels like he’s floating.
“Need to mate… fuck your pretty lil’ ass,” Bakugou rasps against Midoriya’s skin. Fuck, he’s going crazy because of that quirk attack! This feels so good but Midoriya feels like he’s taking advantage of him.
“Kacchan, wait, you’re not… ah— in your regular mindset…” Midoriya weakly protests. Bakugou barely registers what he is saying, but he doesn’t care. He wants this no matter how or what the circumstances are. Bakugou keeps sucking on his shoulder and cupping his balls. Midoriya mewls and squirms around. “Kacchan— bad boy!” Midoriya accidentally scolds him like a dog.
The unexpected happens, and Bakugou’s ears flatten and he whimpers shamefully like a guilty dog. But, his instincts don’t stop. His hips snap together, Midoriya’s bare cock against Bakugou’s clothes one. They both moan in pleasure and Bakugou quickly pulls down his pants. Feeling their hot skin together was too much for both of them.
“D-deku…” Bakugou pleads in a voice that doesn’t sound like his own. He keeps helplessly humping against Midoriya skin, until his tip accidentally catches on his hole and he’s gone. He starts pushing in, and the enveloping heat and wetness makes his eyes roll back and grunt. And fuck, it feels good for Midoriya too, but he feels so guilty.
“Kacchan, no— aah, bad boy,” Midoriya whines back, though his protests hold no conviction. Bakugou wants to obey, he does, but he has dumb dog instincts and he can’t. He pushes all the way in, his hips quivering. Bakugou’s knot feels so good, so big, as Midoriya expected. Midoriya doesn’t say anything as he works his big dick in and out. God, he was truly perfect, so tight for him. Midoriya gasps rawly after one good strong thrust. He doesn’t think he can take it any longer, he wants to gyrate his hips back against him, taking the pleasure.
“Kacchan… so good,” Midoriya sighs. Bakugou stops, and his ears perk up. He’s good? HE’S GOOD!! Bakugou grabs Midoriya and shifts him up so that they’re upright, Midoriya sitting in Bakugou’s lap, or rather, cock. He starts slamming into him like that, making Midoriya’s back arch and yelp at the sudden burst of pleasure. His moans sound so good to Bakugou’s ears, and he can’t believe he’s making him feel this way. Midoriya is losing his mind in pleasure, and he holds onto Bakugou for dear life as he wrecks him. “Oh god, you’re so good, so good!” Midoriya wails.
“Fuck yeah, sh-should’ve done this ages ago,” Bakugou howls, not knowing he accidentally slipped that information out. His dumb dog instincts make everything cloudy and nothing matters except for his Izuku, his warmth and tightness, his breathy moans and squeals. Bakugou digs his nails deeper in and marks his territory by sucking and biting on Midoriya’s chest. He truly looks amazing, his face twisted in bliss and hair all puffy. His face all rosy and drooling. Bakugou wants to relish this forever. He feels his knot grow bigger. That opens Midoriya’s hole further and shifts Bakugou’s cock near his sweet spot. A thrust and Midoriya screams in pleasure.
“Yes, Kacchan, ah ah ha-ah, right there!” Midoriya yells in the sweetest high pitched voice. His moans are shaky and hiccup every time Bakugou thrusts up into him.
“Izuku, god— I’m gonna, hhhha—“ Bakugou groans. His whole body shakes and he bites down harshly on his shoulder, probably breaking the skin from his fangs. One last thrust and he cums. Once Midoriya feels the rush of cum inside him and seeing Bakugou’s orgasm face, he wails as he cums too. Midoriya milks Bakugou with his squeezing and fluttering walls. Midoriya cums all over Bakugou’s stomach.
Midoriya eventually goes limp in his arms, and Bakugou is completely blissed out. They stay huddled for a while, just bathing in each other’s glow. Midoriya lazily raises his arm to scratch Bakugou’s ears and he hums in pleasure.
“You’re cute,” Midoriya giggles sluggishly.
“Only for your dumbass,” Bakugou retorts. That lazy confession goes in and out of their brains, as they are too fucked out to even really think about what just happened. Midoriya tries to pull out Bakugou from him because his cloudy brain does register that it’s all gross and they are both of the hard floor when there's a bed right next to them, but his knot is still swollen. Midoriya scoffs and Bakugou just groans and holds him tighter. They could figure this out later.
----
Midoriya wakes up from a light coming into the room, his whole body is sore and aching, and he’s laying on something so hard. But, he’s also hugging something soft, but not like a pillow… like skin. Excuse me, whaT ?! Midoriya eyes shoot open and Bakugou is right there. Panic hits him like a ton of bricks and all his muscles stiffen. His asshole seems to grab onto something else too!
DEAR GOD DEAR GOD HE’S STILL IN ME WHATDOIDO--
Midoriya takes a deep breath to calm down and he slowly shifts away from Bakugou. He’s pretty much passed out, so he doesn’t notice. Today is a Saturday, amazing, so he didn’t have to rush to work with cum in his ass! Midoriya unhooks himself from him and he sighs of relief. He staggers to his feet and wobbles a little since he’s so discombobulated and sore. He hops towards the bathroom and washes and redresses himself quickly.
The whole time, his brain is completely empty. He doesn’t want to even process what happened last night. He doesn’t want to remember the way Bakugou latched onto him like he was the last person on earth. That wasn’t Bakugou. It was just part of his quirk attack. Midoriya feels a sharp pain in his chest when he sees a bite mark from last night. It meant nothing, did it?
But, the words he said. Should’ve done this ages ago. That could just mean he was a horny teen like everyone else. Only for your dumbass. Only for him, he would be “cute”. That made Midoriya’s head hurt. His brain couldn’t overthink that away. He sighs and turns away, going back into his room.
Seeing Bakugou laid out, bottoms off, tail curled up and peaceful made him forget the worry in his chest. He was really cute. Midoriya should act like an adult, right? Stop letting his emotions get in the way of what he’s supposed to be doing, like a hero. He sucked up his embarrassment and grabbed a spare pair of shorts and put it on Bakugou. He has to maneuver him, and Bakugou stirs in his sleep. Midoriya slightly pauses, but he doesn’t wake up by the time he’s done.
He then picks him up, grunting in pain from his sore body, so he activates a little of OFA to help him out. He places him on the bed with an oof and Bakugou looks comfortable. His mouth even seems to turn a little up, stopping his permanent grimace. Midoriya really couldn’t help himself, so he sits down on the bed next to him and runs his fingers through his hair. It was really tangled and Midoriya sighs in disappointment, knowing that the sleeping man didn’t care enough to take care of his spiky hair.
Midoriya grabs a hairbrush that’s right on the nightside table and begin brushing out his unruly hair. He takes his time, not wanting to yank his hair too harshly. After brushing the majority of his hair, Bakugou begins to move in his sleep. Midoriya pauses, but he’s already waking up. Bakugou groggily opens his eyes to seeing Midoriya loom over him.
Bakugou thought he was in heaven or something. This bed is softer than his, everything smells like Deku, and, oh Deku’s right in front of him. He doesn’t really know why he’s here, last time he remembers he was…
Oh.
Right.
Bakugou mumbles in confusion as he remembers everything. Midoriya kinda freezes with his hands still on his hair. They look at each other, both scared and confused.
“Deku,” Bakugou says in two quick syllables in his morning voice. Midoriya almost dies at how softly he said it.
“Kacchan,” Midoriya says in the same tone. The air in the room feels thicker than normal and Midoriya feels like he can’t breathe. Bakugou notices the hickey, or rather bite mark on Midoriya and his chest rumbles knowing that he did that. He goes out to reach out to the mark and he gently rubs his fingers across it.
Midoriya shivers, not used to his soft touch. Midoriya wanted to ask what he was doing, but he was scared Bakugou would pull away. Bakugou’s hands follows Midoriya’s neck and he sighs. Midoriya places the hairbrush down and scratches Bakugou’s hair and he closes his eyes in response. Bakugou opens his eyes when his hands reach Midoriya’s cheek. He props himself up with his arm and Midoriya lets go of his hair.
They are a breath away and they’re both waiting. Waiting for all the sand in the hourglass to fall. They both break at once.
Their lips are gently molded together, like there was no anger ever between them, only love. Love, oh god, Midoriya shakes and trembles just thinking about what Kacchan has taught him about love. It hurts, but moments like these, they are to die for. Midoriya cannot control the tears that roll down his cheeks, and Bakugou feels them on his cheeks too. He’s not surprised, but it still hurts him, and Bakugou’s hands comfort him by sliding down his back. He eventually has to pull away because his sobs are making him unable to breathe.
“Why are you crying?” Bakugou mutters, his hands drifting towards his cheek again, wiping the tears away. Midoriya just sobs in response. Bakugou sighs and grabs his head to lean on his chest. It’s comforting for Midoriya, and it makes him cry even harder. Bakugou just lets him cry into his shirt, petting his hair like he did for him.
Eventually, Midoriya pulls up and looks at him in the face and shakily says, “It’s just a lot. I thought… I thought you’d push me away.”
“Why would I do that, idiot?” Bakugou furrows his brows.
“Well… ‘cause, that quirk… it made you like tha--” Midoriya mumbles.
“Holy shit. You think that quirk made me fuck you?” Bakugou asks incredulously. Midoriya just looks at him wide eyed. “Spoiler alert, it fuckin’ didn’t. I’ve always wanted to touch you like that! The quirk just made me more of a slave to my instincts,” Bakugou admits. Midoriya goes completely red faced at what he just said.
“But--”
“No buts. You know how fucking hard it was to control myself regularly, everyday, living together, pretending like I didn’t love you!” Bakugou finally bursts, sitting up and pushing Midoriya up with him.
He said it. Bakugou goes red after he realizes what he says, and Midoriya? He repeats those words over and over until he can process it. “And look at you, taking care of me when I practically took advantage of you, and you even thought I was going to break your heart. You’re such a little bitch angel,” Bakugou spits.
Midoriya cracks and laughs finally. Tears spill from his eyes, but it’s not so sad. Bakugou pulls him in again, squeezing him as hard as he can.
“God--! I love you, I love you so much, I have forever, Kacchan,” Midoriya blubbers.
“I know, Izuku. Me too."