Chapter Text
Kirishima wakes up during the climax of his wet dream, his giant alpha cock twitching erratically as it pumped thick, white cum all over his abdomen and chest, completely saturating the sheets that kept him warm all night long. He sits up and groans, peeling the sticky sheets off his body. He had started going to bed nude long ago, it helps make the clean up easier, and it was one less thing to wash.
Kirishima grabs his knot and squeezes it repeatedly, trying to milk out all the cum so it wouldn’t be inflated for the rest of the day. He brings his free hand up to his mouth biting his fist to try and keep quiet, he doesn’t want anyone to hear him ‘cause fuck- squeezing his knot felt so damn good he can’t help but moan. When he’s done he got off the bed, wiped up as much cum off of his body that he could with the clean bottom corner of the sheet and began stripping his bedding of his bed and into his laundry basket.
It was just another morning, another day of laundry. For the past few months Kirishima has been getting up almost at the crack of dawn to do his laundry in secret. He’s been having wet dreams about Bakugo, every single night- it’s driving him insane. The Omega’s soft, pale skin looks so enticing and Kirishima just wants to dig his sharp teeth into it. The sight of his large defined pectorals and perky, pink nipples makes a good chill go down the Alpha’s spine.
Most people who have wet dreams just end with some wet underwear, but for Kirishima it was all his sheets. He had a problem, an embarrassing one that he tries to hide at all costs. He has a rare condition that affects only 0.8 percent of the entire alpha population on the entire planet; during ejaculation instead of cumming a normal, healthy amount, he has an overabundance of it. He can literally fill entire buckets if he wanted to. Add on his natural recovery rate and endurance it made life completely miserable for the poor Teen. Puberty, why are you an evil mistress?
His doctor says no one knows why this condition exists, but it’s not considered harmful so no one has researched a cure. Plus it makes the afflicted alpha extremely fertile, which is a positive thing because that apparently makes his alpha pheromones much stronger to omegas, aka a potential mate. The doctor then explained to him that made him a very desirable alpha and puts him at the top of the food chain, making him a prime candidate to receiving many omega bonding offers. But Kirishima doesn’t care about attracting a potential mate, he doesn’t care that it makes him prime mate material. The Red Headed Alpha never wants anyone to know about it especially his friends, and definitely NOT Bakugo; the love of his life who would probably be disgusted by it.
Kirishima throws some basketball shorts on and heads downstairs to wash his laundry like he always does. He wakes up before Bakugo goes for his morning run, before Todoroki gets breakfast, and before Midoryia heads to the gym. It’s a quiet morning. Kirishima can hear the small mummers of the wind through the windows as he walks through the common room to get to the laundry room which was in the basement of the dorm. With a twist of the nob and some detergent and the machine was off. The rumble of the machine was nice, white noise while he waited.
Kirishima sits on top of the unused machines scrolling through his phone. There was no class today, it was Saturday after all. He was probably going to go to the gym and stay longer than normal. Hopefully hang out with his bros after and maybe do some homework without Bakugo’s help. He hoped he didn't need the Omega’s help today. Kirishima didn't think he could make it through. The fresh images of his dream coming back to haunt him. Bakugo moaning his name as his cock began to slowly stretch his ass open. The way his breath hitched as the tip went in. The sounds of Bakugo moaning and the sensation of him running his fingernails down the Alpha’s back. Kirishima slaps those images and thoughts away. He didn't need those right now. He looks down at his basketball shorts. A large very noticeable bulge was forming and he was only at half chub. He felt blessed to have such a huge cock but in situations like this, where he was in public and anyone could see, it was such a hassle.
And it’s been getting worse and worse. Harder and harder to control his urges and cravings for his longtime crush and best friend. Every time he sees Bakugo doing something like bending over to stretch or rubbing the dirt and grime off his body in the shower room Kirishima’s mind goes directly into the gutter. He hates his stupid hormones, his stupid perverted mind and he especially hates his stupid rare cumming condition.
Kirishima sighs. Bakugo would never want him. He’s always talking about “not needing a dumb alpha that would only drag him down”, how he’s fine on his own and that he’s going to prove he can be the number one hero as an omega with no ones help. Bakugo is strong, hot headed and determined and that’s what Kirishima admires and loves about him. His fierce determination to be the best no matter what! Manly. Very manly. But sometimes Kirishima just wants the Omega all to himself. He knew that was selfish so he adamantly hid his feelings for the Blonde. He rather have Bakugo near him than avoiding him. So keeping his feelings at bay and keeping their relationship platonic seemed to be working. He couldn’t bare the thought of Bakugo breaking off their friendship because he found out Kirishima wanted to become his mate and he obviously didn’t feel the same way. Why would he? Kirishima is… well… him.
A buzz from the washer brakes the trance inside Kirishima’s mind. He moves his sheets to the dryer. Then he heads upstairs while his stuff dries to get ready for his day.
After putting the sheets back onto his full sized bed he went and to eat some breakfast down in the common room. There he chatted with Asui and Uraraka about their improvements on the battlefield and briefly discussed what would be on the next English test.
Kirishima finally heads to the gym and starts his workout. Trying to use as much of the pent up energy he has into it. Substituting his inner needs and desire for another rep or another set of weights. Anything to get rid of his… problem?
Kirishima has been spending more time at the gym blowing off steam then he wants to admit.
The Alpha finishes his last repetition on the Shoulder Press Machine. He can feel the sweat dripping from his hairline down the curve of his throat. His mind is finally clear, at peace. Kirishima feels like he can breath for just a moment until-.
“OI, Shitty Hair!”
Kirishima turns to find a warmed up Bakugo, covered in a sheen of sweat and half out of breath. He must of finished his warm-up and run before coming to the gym.
“Hey Man, whats up?”
“Bring your ass over here and spot me.”
Kirishima simply nods his head, he can’t say no or Bakugo will think (know) something is up. He tells himself he can do this. Nothing bad is going to happen. He hopes…
So Kirishima and Bakugo setup his normal lifting weight, only Bakugo doesn’t stop there. He adds twenty five extra pounds.
“Not doing your usual?” Kirishima questions curiously.
“I gotta push myself” Bakugo says but quickly adds, “It’s been feeling too fucking easy these past few days.”
That was a weak cover up, Kirishima could see the annoyance in Bakugo’s face, the challenge. That meant Midoriya did something better than him and he needed to prove to himself that he was better than the Green Haired boy...
This is not going to end well.
As Bakugo lays on the bench and Kirishima stands above he helps the Blonde bring the weights down, then slowly back up again for a single rep. They do this until Bakugo was confident enough to do it on his own, but Kirishima kept his hands half up just encase he needed to grab it immediately- though he knew that wouldn’t happen Bakugo would rather pull a muscle then drop the weight. But looking down at the Omega made things stir in his gut. That face Bakugo makes as he grunts when he lifts the weights up high... Was that the face he makes when he’s turned on? Was the way he was laying right now a position where he could do… things. Like maybe he could take Kirishima’s entire thick rod down that pretty throat. The Alpha watches ever sweat filled pump intensely- studying Bakugo’s lean but extremely fit frame.
He would look so nice under me. He would look so good sitting on my cock.
As Kirishima’s eyes roam Bakugo’s beautiful form he notices something he hasn’t seen before.
What’s that? Those little bumps on bakugos chest? He didn’t have those before… Did he?
...No. He didn’t, I would’ve noticed. I stare at his chest everyday…
Though, now that Kirishima thought about it, he has been away from the Blonde for a bit. They didn’t hang out after school yesterday or do homework together on Thursday. Bakugo had said he was “busy”.
Maybe...
Kirishima’s eyes widen. Maybe Bakugo got his nipples pierced? That took Kirishima aback only to snap back to reality when a certain someone screamed out to him.
“OI!”
Kirishima immediately comes to his senses and helps Bakugo put the weights back on to the stand.
“The fucks wrong with you? You look like you’re about to pass out and you’re not even doing shit!” Bakugo glares daggers at him and Kirishima feels frozen because what if Bakugo knows. What if he knows Kirishima is totally obsessed with him? What if he’s trying to get him to crack? To admit it? So he can break his heart and tell him he’s a stupid alpha and to fuck off.
“I-Im just- I ugh- ummm...”
“Spit it out”
“Just- umm excuse me, B-Bakugo!” Kirishima runs to the locker room. Leaving the other awe struck.
Maybe he needed a break or forgot something? Why the fuck is he acting so weird today? Was he like this during school yesterday?
Kirishima ran to the back of the locker room. He was panting and sweating. Everything felt warm. It wasn’t because he ran away from his crush but because he wasaroused.
Kirishima let his back hit the cold wall.
Fuck!
Kirishima hides in the very back of the locker room. No one would come in this section. He knew a few people would come in and out eventuallybut he should be safe for a while. He hoped.
He puts his hand down his shorts and slowly palms his thick cock. When did Bakugo get those?! Maybe when he was out with Mina the other day? He strokes his shaft to the thought of Bakugo looking up at him with those narrow red eyes. Pleading to take his dick in his mouth. Begging to have a giant alpha cock shoved down his throat. Kirishima’s alpha cock. He started to pump faster. The images of Bakugo gagging and sucking his dick getting more and more vivid. He was getting closer. But he needed to stop. Now. There was no way he would be able to clean up the mess afterwards, especially without anyone seeing or getting suspicious of the manypaper towels he would yank out of the dispenser at the front of the locker room near the bathroom.
That’s when he saw an empty water bottle under the bench. He moves to the bench and puts the water bottle in front of him. He starts pumping more fiercely. His voice hitches. He strokes until the pool in his stomach finally explodes. Kirishima presses the head of his cock to the opening of the large water bottle and cums. Hard. It just keeps coming and coming until the water bottle is full to the brim.
Kirishima takes and lets go of a breath he didn’t know he was holding. His shoulders relax and finally it hits him.
“What did I do?!” He whispers to himself in shock and disgust.
Kirishima was panicking now. What is he going to do. He can’t just throw this out here. There are people around! He had to do it outside or back in his dorm or something. He closes the bottle and fixes his shorts. Tries to look like he didn’t just masturbate in a public locker room at the thought of his best bro. That’s normal. Right? Kirishima Takes a deep breath and heads out of the locker room into the gym. He has to get out of here and dispose of his thick embarrassment. ASAP.
As Kirishima walks out of the locker room he hears, “SHITTYYYY HAIR!”
Kirishima steps back as his crush walks towards him, “B-Bakugo!”
“You Fucking ran cause you forgot your water bottle?!” Bakugo crosses his arms.
“Umm-mm I- I-”
“Shut up and come help me, Metal Shit is here too.” He turns and walks to where the other Omega, Tetsutetsu is waiting for them at one of the bench presses. He waves and smiles big when he sees Kirishima. The Alpha waves back and tries to put on his best smile but honestly now is not the time. He needs to leave. He needs to get out of the gym. He needs to dispose of this cum filled bottle. Immediately.
“NOW, SHITTY HAIR!”
Kirishima reluctantly spends the next few hours dreading everything. He keeps the cum bottle as close to him as possible, whether it was under the bench he was working at or in his damn hand. Kirishima works out with Testutetsu and Bakugo the whole time. Bakugo kept getting mad at Kirishima for not giving his all like he usually does. Even Tetsu noticed and made a vague comment. Kirishima made up the first excuse that came to his head, ‘he’s been at the gym for most of the day so he was running low on energy’. They seem to buy it? Honestly he wasn’t sure all he knew was he could spend the whole day in the gym working out at max capacity and not leave until closing time if he wanted, and Bakugo shouldknow that… they do it all the time.
A sharp “Bro” snapped Kirishima out his thoughts. He looked at Tetsutetsu.
“Can I have a swig of your drink. I forgot mine.”
“What NO. Nooo. Umm I mean no... Maybe ask Bakugo for some of his.” Kirishima tries to play it cool but his heart starts beating out of his chest.
“Bro, He would not let me work out near him if you weren’t here right now. There’s no way he’ll let me drink from his water bottle.”
“T-tesu, I dont-”
“Kirishima what’s up with you today? You doing okay, Bro? Do you wanna talk later, get something off your chest?”
“Um Nothing! I’m fine! Everything’s okay, don’t worry about me.”
“I’m glad to hear. Now pass me your bottle.” Tetsutetsu extends his open hand forward, waiting.
Kirishima looks down at the bottle like it was his worst enemy.
The Omega gives him a weird look, “...Its just water, Dude.”
Kirishima reluctantly hands the water bottle over to Testutetsu. He wants to slap it from his hands, but that would make it worse. The whole gym, no, the whole school would know his dirty secret. He can’t have that. Plus everyone would think he’s a filthy fucking pervert for bringing a bottle of his cum to the school gym.
Kirishima watches in horror as Tetsutetsu takes a large swig from the water bottle. The thick gulping sounds he makes makes the pit in Kirishima’s stomach feel like a void.
He’s watching his Bro drink his thick ass cum. It was horrible but honestly a little arousing...
When Tetsutetsu finally stops he looks up at Kirishima with an expression he can’t read, “DUDE... WHAT IS THIS!?”
Kirishima’s face turns bright red “ Its- ermm… Look I can explain-”
“This shit is so damn good! It’s like a smoothie! What flavor is this? I can’t place it!”
“W-What?” Kirishima’s eyes practically roll out of his skull.
A SMOOTHIE?!!! Why the Hell does he think it’s a smoothie? How could he confuse cum with a smoothie?!
“It’s like a smoothie and a protein shake had a baby. No it’s not a baby, it’s a Man! You have to tell me what this is!” Tetsutetsu leans in like this is some sort of top secret no one can know, which actually it is. Kirishima can’t let anyone else drink this or find out about this. It has to stay between him and Tetsutetsu and die today, never to be remembered. If the other ever brings this up Kirishima will deny, deny, deny.
Kirishima had to think fast, “It’s a drink recipe I make. I guess, it technically it is a smoothie…? Now that I think about it...”
“Oh SHIT! I didn’t know you can fucking make shit, Bro!” Tetsutetsu wraps his arm around Kirishima’s shoulders.
“Its kinda a...new thing I do..?” Kirishima said nervously, he tries to sound calm and collected but he’s honestly freaking out.
Bakugo interject, “What the fuck are you to Hard Surface Shits standing ‘round for?! We’re at the gym to WORK OUT!”
Tetsutetsu beams at Bakugo, “Kirishima made this AMAZING smoothie!”
Kirishima face just keeps reddening as he nervously laughs to tries to deflect his growing panic and anxiety.
“I’ll be the judge of that,” Bakugo says as he snatches the bottle from Tetsutetsu’s hand.
Kirishima face went from red to deep red as he bites his lip to keep himself from screaming and telling Bakugo “Don’t drink that!!!!”
He held it up to those beautiful pink lips that Kirishima thinks about kissing (multiple) times a day and begins to chug.
Bakugo Katsuki is literally drinking his cum. Not just a sip- a gulp. Kirishima’s brain was flat-lining. He can’t compute what is going on right now. His crush of two years, the person he is positive he is in love with, is drinking his cum.
Right in front of him.
When Bakugo is done he looks at them both, wipes his mouth with the back of his hand and smirks,“Well, fucking shit. That’s not too bad, Shitty Hair. What is it? Coconut flavored or somethin’? It’s actually tastes pretty nice, sweet- but not too sweet.”
Tetsutetsu says with a smile, “I told you, Dude!”
Kirishima just nods his head yes, “Yeahhh… It’s coconut.” He’s not gonna disagree with Bakugo, he doesn’t even know what flavor his cum would taste like to an omega since he’s a virgin. Omegas actually like and enjoy the taste of alpha cum because of the pheromones in it, and it has a distinct flavor to them. If the alpha is compatible with them it will taste really good, but if they’re not then it tastes horrible. Apparently a lot of omegas love to have sex, especially oral just so they can eat it. Or at least that’s what he’s read online on multiple different websites and seen memes about… Kirishima would ask an omega he knows but he thinks they’re all virgins, Hero Training is hard okay? Who has time for relationships when you’re training for hours everyday to fight bad guys? Plus he would honestly be too embarrassed to actually ask any of them if they were experienced in the bedroom. He’d probably just wonder until it got brought up in conversation somehow, maybe from Kaminari being flirty and talking about sex like he always does.
“Is this healthy or some sugar filled bullshit?” Bakugo glares at Kirishima and he suddenly feels under attack. Internally he’s panicking because he knows Bakugo is strict with his Hero Diet and will kill him if what he just drank is bad for his health.
Is cum good for you? Does it have sugar? Will he gain weight from drinking my cum by the bottle? Oh my god I should’ve paid more attention during health class!
Kirishima goes with the safest answer, “Y-yeah, of course it’s healthy. I wouldn’t bring junk to the gym!” He smiles but it feels fake and he hopes Bakugo can’t tell.
“Good. When we fucking work out bring this shit from now on.” Bakugo takes another few gulps before handing it back to Kirishima.
Tetsutetsu added, “Ya, bring some for me too!”
Kirishima was shocked.
He could not believe he was gonna have to jerk off and cum into a water bottle and bring it to the gym for his bros. But he has too, he can’t get caught in a lie, especially one as big and embarrassing as this! He has to keep this up until he can make a some sort of substitute. Something that somehow has the same texture as his cum, and tastes like fucking coconuts because apparently his cum is coconut flavored!
“Did ya fucking hear me, Shitty Hair? What the fuck is wrong with you today?” Bakugo says with intense irritation from the spaced out look on Kirishima’s face and the lack of response to his statement (more like demand…).
“Yeah! Yes I heard you, I’ll uhhh definitely bring it, don’t worry.” Kirishima blushes so hard he feels light headed from the rush of blood to his head and scratches the back of his neck.
Bakugo slaps him upside the head, “Go back to the dorms, shower and take a nap I think your brain is fried from trying to do your homework by yourself for the past two days.” Bakugo grins smugly, “You’re so fucking useless without me, huh? Can’t even do your homework without my guidance and presence, Shitty Hair?”
Kirishima bites his bottom lip, “Honestly, I am lost without you.” He looks directly into Bakugo’s eyes as he says it.
Bakugo, not expecting him to take the statement seriously, let alone respond like a sap, shoves the Alpha away from him in embarrassment, “Whatever just go already, Idiot.”
Kirishima waves to them and walks out. He doesn’t remember anything else until he’s back in his room laying on his bed. Everything is a blur. All he could focus on and remember is the fact that he’s feeding his two best bros (and one of them happens to be his CRUSH) his cum from now on.
His cum is being swallowed by Bakugo Katsuki, willingly… He actually LIKES the taste of HIS cum.
That means they’re a compatible Omega/Alpha pair and could be potential Bonded Mates.
Kirishima doesn’t know what to do with this information.