Work Text:
“What the fuck are you doing, Deku?”
Well, that escalated quickly. One second, Bakugou was chilling in his home drinking a beer after a long day at work; in the next, he has his 17 years-old childhood friend climbing on his lap. Alright, maybe childhood friend isn’t really the best title for the boy.
Deku is the kid who lived next door from his parent’s house and that Katsuki used to babysit from time to time. They’ve known each other for almost all Deku’s life, Bakugou saw the little nerd grow and follow his dreams of studying in UA and being a Hero-in-training. Katsuki is a Hero himself, that is why having a minor rutting against him really wasn’t how he expected this night to go.
Even more unheroic is the fact he has been dreaming about this since the kid hit a growth spurt and started beefing out at 14. Deku has always been cute and Bakugou has an admitted soft spot for him, but puberty did him too good. Katsuki knows he shouldn’t be thirsting over a boy 8 years his junior; but it was so hard to remember that with the way Deku’s face lit up when he saw Bakugou.
“Kacchan, I want to do it.” Deku whispers, his hot breath hitting Katsuki’s face from how close he is. “Please, Kacchan…”
And to make his point even more clear (as if it wasn’t already), Deku kisses him. It’s soft and gentle, just a touch of lips really. And Katsuki is the fastest rising young Hero on the rankings, if he wanted to he could explode the kid in his lap to the next block. But he doesn’t, he just sits there frozen and lets Deku take the lead.
Probably interpreting (correctly) his compliance as permission, Izuku gets a little bit bolder. The boy begins properly kissing Katsuki, working his lips against his own. When Deku dares to lick the seam of his mouth, Katsuki sighs opening his lips and letting Izuku have a taste.
The young man can probably feel the beer on Katsuki’s tongue, but that doesn’t seem to deter him even though Bakugou knows the kid hates the taste of beer. He allowed Deku to take a swig of his bottle once, in one of their many sleepovers over the years that didn’t end like this, and he will never forget the disgusted face the boy made.
Beer. Katsuki wishes he could blame alcohol for what is happening right now. But truth is he didn’t even finish a bottle tonight. No, the responsibility for this is all Katsuki’s, even though it was Deku who showed up unannounced and asked if he wanted to try something different for a change.
It is all Bakugou’s fault when Izuku retreats his tongue from Katsuki’s mouth, and Katsuki chases him bringing him back to a more searing kiss. But can you blame him? Deku has always been his boy. Since he was barely four years old and hoping to have a quirk ‘as cool as Kacchan’s to be your Hero partner’; through the hard middle school days when Katsuki was a newbie Hero and wasn’t around to protect Izuku from the bullying; until Deku magically was chosen by All Might, given a quirk and started working out to become a Hero himself. Izuku is special to him, Katsuki has always known he loved the boy; but puberty made him realize it was not an older sibling kind of love, but the ‘I want him by my side’ kind.
And now Deku is here, on his lap, all cute and eager, moaning and hard from just a kiss. Katsuki wants to devour him, and so he does. The Hero trails kisses in his jaw and neck, and somehow Katsuki’s hands are already under the boy’s shirt holding onto his waist, feeling the soft skin and taut muscles there.
Izuku is no innocent bystander, he ruts his erection on Katsuki’s thigh and paws at his pecs. The boy is so responsive and honest about what he is feeling, it’s addictive and Bakugou wants to get more cute reactions out of him. One of Katsuki’s hands travel higher and reach Izuku’s hard little nipple, when he plays with the bud Deku arches his body towards the Hero and mewls sexily.
It’s so fucking hot that it takes Katsuki out of his drunk daze for a second and he notices the state they are in. Deku’s is red-faced and panting hard, his hard-on prominent in his shorts and his lips are kiss-bruised. Katsuki is not much better himself, his dick is growing in his sweatpants and his hands are mapping Izuku’s torso. Shit, how did he let this come so far?
“Shit, Deku. We shouldn’t, we-”
“Kacchan, please” Izuku looks at him with pleading eyes. “I want this so much.”
Those green eyes will be the death of him.
And, as if Katsuki wasn't already done for, Izuku boldly pulls his shirt off his body. The great expanse of freckled flesh is exposed. Izuku is fucking beautiful; the lithe and toned body the boy worked so hard to achieve, the jarring scars in his arms that tell the story of his stubbornness. He is cute and sexy at the same time, one of the many paradoxes that make his Deku so perfect.
"Fuck…" Katsuki whispers before grabbing the boy and flipping their position.
Bakugou lays the boy on the couch and hovers over him. It’s the realization of all his wet dreams and Katsuki isn’t strong enough to deny himself that. Between scars and freckles, Izuku’s body looks like a painting of his history and Katsuki hates the fact that there isn’t any mark of his own in that skin. It’s like he isn’t part of Izuku’s life and that is the biggest lie of all; he needs to make it right.
They are a part of each other and they make each other better. Izuku has been trailing after him for years trying to get on Katsuki’s level and be a hero by his side; and for Bakugou, he wouldn’t be the man he is today if he had not been taught to love and care for someone physically weaker. Izuku showed him that there are many types of strength, and that Katsuki’s strength should be used to protect those who can’t protect themselves.
Now Katsuki sucks on pretty red marks across Izuku’s chest and belly to let it registered on his skin how essential they are to one another. How Izuku is his, his to protect, care, love, cherish, kiss, lick, bite, devour. And, most importantly, it’s Deku who decided to give himself to Katsuki; eager and willing.
Izuku gasps when Bakugou licks his belly button, and Katsuki can’t help but raise his head with a smirk to check out what cute expression his boy is making. His face doesn’t disappoint, Izuku looks even more wrecked than before.
“You are so fucking beautiful” he whispers before kissing his Deku again.
“Kacchan…” he whispers back between his lips. “You too” Izuku pulls Katsuki’s top up to make his point.
Bakugou raises his body back up to take off his tank top and Izuku’s eyes greedily record every move he makes with adoration. Never before he felt so sexy and wanted, it’s a power high unlike any other. That boosts Katsuki to reach for Izuku’s stupid cargo shorts. It’s a fugly piece of clothing that he never thought would look good anywhere, but now he has to concede that he really wants to see it thrown on his living room floor.
If Katsuki thought the boy was sexy before, he had no words to describe what seeing Izuku's thighs made to him. They are so strong and thick, it almost seem like they don't belong with the rest of the body. The years of training his shoot style have paid off in more ways than one would imagine and Katsuki drops his head between those perfect thighs without a second thought.
Showing that he has no preservation instinct whatsoever, Izuku just spreads his legs open to Bakugou as an invite. Katsuki bites and sucks blindly, enjoying the musky smell when he nuzzles against Izuku's crotch.
There is a wet spot on Deku's boxers showing how much gone the boy is. Katsuki would like to say he is completely unaffected by it, but it would a fucking huge lie. His dick twitches inside his sweats, and he is suddenly very glad he went commando when changing into his stay-at-home clothes.
Izuku wiggles and whines under him, bucking his hips to get some kind of friction. Katsuki would be happy to keep slowly exploring the boy's body, but he can feel Deku's impatience in the air so he reaches for the elastic of his boxers and looks up to Izuku.
"Are you sure? We can stop now or whenever you want."
"Kacchan, please, I'm sure" he cries. "I've wanted you for so long. Please, let me have this before-"
But Bakugou doesn’t hear the end of that phrase because once he heard the permission, he pulled Izuku’s underwear off making the boy gasp at the feeling of his dick bobbing and hitting him in the belly. Wow, the nerd grew up a lot since Katsuki had to give him baths during babysitting duty.
His cock is red and leaking, quite big for a boy his age, and the hair on the base is still not as thick. It’s cute and Katsuki licks it from the base to the tip before pushing it down his throat. Izuku cries loudly and trembles, he clearly won’t be able to hold his orgasm very long and that eggs Katsuki on. Now he wants to feel Deku cumming in his mouth, he wants to unravel the boy like never before.
He lets go of Izuku’s dick with a lewd pop and goes down to suck on his balls. The sounds he is pulling out of Deku are wonderful and the boy paws against the couch pillows wildly. Keeping his path south, Katsuki reaches the cute puckered hole and starts working it.
At the first lick, Izuku spasms under him.
“Kacchan! No! It’s dirty!”
Bakugou chuckles, “I’m gonna do many dirty things with you, this is just the first. Gonna eat your ass, lick your sweat, swallow your cum…”
Izuku shivers and Katsuki goes back to working his tongue in and out of the little asshole. When it becomes very wet and relaxed, he enters one finger together with his tongue to start stretching him. It’s very tight but Izuku is pliant for him, so he manages to enter a second finger very quickly.
Working his fingers in and out, he knows he found the boy’s prostate by the way Izuku trashes around and cries. Katsuki knows Izuku is very close to cumming, so he swallows the boy’s dick and sucks harshly on it. Just a moment later, he feels his mouth filling with cum and Izuku trembling under him. Bakugou swallows it all and even catches what dripped in his chin with a finger to lick it off.
He pulls back to appreciate his handiwork. Izuku’s dick is glistening with his saliva, the puckered hole blinks missing the intrusion, his chest heaves, his body is covered in red marks and his expression is dazed. Katsuki did that, he left Izuku wrecked like that.
Bakugou is so entranced watching his Deku, he even forgets about his aching neglected cock. But Izuku doesn’t. The boy raises his body from the couch and pushes Katsuki back until he is sitting properly. Bakugou just lets himself be pushed around by the boy too lost in the moment to ask what is happening. Only when Izuku kneels down between his legs and grabs the elastic of his sweats does Katsuki understands what is going on in the boy’s mind.
“Hey, you don’t have to do that, nerd.” He says softly taking Izuku’s hands on his own.
“I really really want to do that.” Deku says looking in his eyes. “Let me suck you, Kacchan.”
How does anyone expect Katsuki to say no to that? Deku has his determined expression on when he pulls down Bakugou’s sweatpants, but it morphs into a surprised one when the boy sees his erection sprung out.
Izuku’s expressions are the best. He goes from determined, to surprised, to happy, to curious, to lewd in a matter of seconds. The boy uses both of his hands to hold Bakugou’s cock then pokes his pink tongue out and licks warily the wet tip to taste the precum. He seems to like it because a moment later he puts the whole head in his mouth and sucks and Katsuki’s brain turns out.
Shit. Fuck. It’s so hot and wet. So delicious. Has receiving head always been this good? Because he can’t remember feeling like he was melting through his dick. Actually, how long has it been since he got laid? Way too long. Probably years, since his body and heart decided the only one they wanted was the young boy between his legs right now.
The boy who looks so fucking focused trying to put as much of Katsuki’s dick as he can into his throat. Izuku goes so deep in his eagerness that Bakugou feels the choking spasms of his throat around his dick.
“Hey there, take it easy” Katsuki pets the green curls to calm down the boy.
But Izuku is having none of that and goes down again trying to deepthroat Bakugou’s huge cock. His throat closing on Katsuki’s dick almost takes the Hero through the edge, and he has to pull Izuku off his cock for both their sakes.
“I told you to take it easy. Don’t you fucking die on me, nerd.”
Izuku looks at him breathing hard. “I just want to make it good for Kacchan.”
“Good? This shit ain’t good, it’s fucking great. Come here.”
He pulls Izuku by the neck and back on his lap again and kisses the boy. His boy, his little nerd who works so hard at everything, even sucking dick apparently.
“Kacchan” Deku whines on his lips and Katsuki swallows it. “Fuck me.”
“Shit” He drops his head on Izuku’s shoulder completely defeated. “Alright, just give me a sec. Gotta pick some shit from the bedroom.”
Katsuki says as he puts Izuku back on the couch and tries getting up. But a small (but strong) hand holds him by the wrist.
“I have what we need. It’s in the pocket of my shorts.”
And there it is, a new tube of lube waiting to be used. Bakugou raises an eyebrow to Izuku and receives a sheepish smile.
“I didn’t want you to turn me away because I wasn’t prepared…”
“You still forgot the condoms, but I must have some around-”
“No!” Izuku grabs him again and caresses his face lovingly. “I didn’t forget. I just… I trust you, Kacchan, and I want to feel all of you.”
Bakugou grunts and gives him a bruising kiss. This is fucking too much. If Katsuki opens his eyes and sees those green eyes looking so open and inviting to him after what he had just heard, he doesn’t think his heart will be able to handle.
So he snarls against Izuku’s lips “turn around on the end of the couch.”
When he opens his eyes again, he thinks the plan was for nothing: he must have died and gone to heaven. It’s the only explanation to the sight of Izuku laying on his belly on the couch’s arm and presenting his beautiful round ass towards Katsuki. The little vixen even looks up from his shoulder with an excited expression on his face.
Bakugou’s body moves on his own. It’s like a spell, he can’t control how his hands grab onto the plump ass cheeks and open them showcasing the blinking hole. Katsuki can’t even tell you when he slicked his cock with lube for when he notices it, the head of his dick is already aligned to fuck into his little boy.
It’s tight, so fucking tight. Only half of his dick is in, and Bakugou is already thinking he is close to cumming. He waits for a second to get his bearings and allow Deku to get used to it. The boy moans and trembles, his head thrown back and fat tears running down his face. Just when Katsuki starts second guessing this because maybe it’s too much for Deku to handle, the boy pushes his ass back and sheaths Katsuki completely inside him. Both of them cry loudly.
“Kacchan! So big! I’m so full!”
“Shit, Deku… fucking tight… fucking perfect…”
Bakugou begins moving slowly, hoping to stretch this for as long as he can and not hurt his boy. But his mind is in complete overdrive ‘I’m fucking Deku. I’m fucking Deku.’ and it doesn’t take long before he picks up the pace.
It’s perfect and maddening. Katsuki’s whole body seems to be on fire and he is getting very close to a tipping point. Not wanting to finish this before Deku, he drops his body over the boy’s back. One of his arms hold Deku against him by the chest, and the other hand goes down to jerk him off.
“I’m so close, baby. So fucking close.” Bakugou whispers on his ear. “You are so perfect, so delicious. I’m gonna fill you up full of cum. Do you want that? Do you want me to breed you, baby?”
“Yes, yes, yes! Please Kacchan! It’s so good, I want you so much! Please!”
Izuku wails when he cums the second time that evening, shooting his seed on the pillows as Katsuki milks him. At the feeling of Izuku’s ass clenching around him, Katsuki cums as well deep inside Deku. Both of them collapse on the couch spent with Bakugou’s dick going soft still inside the boy.
It takes a moment before Katsuki's breathing goes back under control and he gets up to wet a rag in warm water to clean Izuku. The boy is dead to the world and just moans and grunts as Bakugou cleans him.
After he got rid of all the cum, Katsuki hoists Izuku up in his arms and takes the boy to his bed. He tucks both of them in and cuddles around his small lover caressing Izuku’s face.
Katsuki knows what he did was wrong, but it certainly doesn’t feel like that. Actually, nothing feels more right than having Izuku on his bed, between his arms.
“Hey” Bakugou whispers when Deku finally opens his eyes.
“Hey” Deku whispers back.
“We need to talk.”
Izuku hides his face on the crook of Katsuki’s neck and whispers softly “I’m sorry”.
“Why the fuck are you sorry?”
“I know I shouldn’t have forced you like that. I just- I panicked. When I heard you were moving away, all I could think was that you were going to leave me behind. You would leave me behind without me ever telling you how I felt.” Izuku says with tears beginning to run down his face.
“Deku-” Katsuki tries stopping him, but the boy keeps talking.
“I thought that if I showed you how much I love you, maybe you could wait a little. Just six months before I graduate. Or at least wait for me there. I will be able to reach you someday, just don’t… don’t leave me behind and forget about me.”
The boy barely manages to finish his speech from the sobs that break from his throat. It’s heartbreaking, and Katsuki would do anything not to see that again. However, he has no idea what Izuku is talking about.
“What-? Why would I go away, nerd?” He asks confused.
“To America. All Might told me you were going to America.” Izuku looks sadly to him but Katsuki can’t help but laugh.
“For three-weeks, not forever. It’s just some extension program, I’ll be back before you fucking notice it.”
“Oh.” Izuku freezes in place for a second then a terrified expression comes to his face and he hides under the blankets.
“No, no. You come back here, you shitty nerd” Katsuki tries pulling the boy back but Izuku holds the blankets.
“I’m sorry, Kacchan! I forced you to do this without having even a good reason!”
Bakugou rolls his eyes and pushes the blanket away harshly. Then he grabs Izuku’s head and brings the boy for a searing kiss.
“Stupid kid, you can’t force me to do shit.” He kisses Izuku again more gentle this time. “Damn Deku, I’ve been holding back for so fucking long but now you did it. You made me fucking addicted to you and I ain’t gonna let you go. You are mine now. Got it, nerd?”
“I’ve always been yours, Kacchan. Always.” Izuku says before kissing him back.