From- My Kiribaku Oneshot book
Date:11-27-21
Aged up
⚠️Smutt, cussing, nervous, praise kink, hair pulling kink, dirty talking⚠️
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Kirishima and Bakugou have been dating for almost a year now in secret.

Kirishima wanted to have their relationship be public but Bakugou didn't because he was (even if he didn't want to admit it) scared of how everyone would react.

Currently both boys were in Kirishima's dorm room. It was getting late so Bakugou had told everyone that he was going to sleep.

Kirishima being Kirishima told everyone that he was going to head to bed as well after a few minutes leaving them all kind of suspicious but not too suspicious.

"Baby I'm bored~" Kirishima whined as he looked down at Bakugou.

The blond boy was laying on top of him scrolling through Tumbler on his phone, cuddling his needy boyfriend.

"What do you want to do?" Bakugou asked with a sigh as he turned his phone off.

"Kiss!" Kirishima answered with a large sharptoothed grin.

Bakugou smiled at the redheads adorableness and complied, leaning up and kissing him.

The kiss started out innocent and pure.

Well that was until Kirishima sat up, Bakugou now strattling him. He moved his hands down to the blonds waist and turned his head, deepening the kiss.

Bakugou moved his hands up to Kirishima's hair and tugged at it accidently.

Kirishima let out a moan into their kiss, blushing brightly afterwards.

The two had given each other handjobs and blowjobs before so they each knew what the other sounded like when they moaned and also knew what each other looked like. Even still Kirishima was always flustured whenever he moaned or let out any noise similar to one.

Bakugou on the other hand loved hearing Kirishima's noises, they were music to his ears.

"Sorry." Kirishima mumbled against Bakugou's lips, his blush from embarrassment and being flustured.

"Don't apologize dumbass, I like when your vocal." Bakugou mumbled back instantly making Kirishima's blush darken.

Instead of replying again Kirishima just kissed Bakugou.

The kiss was slow but soon became heated and full of passion.

Kirishima slipped his hands under Bakugou's shirt and took it off, breaking the kiss long enough to get it over Bakugou's head before connecting their lips again.

"Someone's eager." Bakugou laughed as Kirishima took his own shirt off.

"Yeah well its your fault for making me horny." Kirishima countered before pushing Bakugou so he was laying against the bed, Kirishima's arms pinned on either side of his head.

"Well I guess if it's my fault then I should help you out then shouldn't I?" Bakugou asked as he wrapped his arms around Kirishima's waist, pulling him down before grinding up.

The sudden friction made them both let out breathy moans.

"How do you plan on helping?" Kirishima asked before he began to kiss down Bakugou's jaw and neck, slowly moving down to his chest, sucking on his nipples making the blond let out a mewled sound.

"Fuck me that's how." Bakugou said shocking his lover so much the he froze before pulling his head back away from his body.

"Are you sure about that? Are you ready for that?" Kirishima asked knowing that penitentiary sex always hurt when you did it for the first time for the bottom.

"Yes I'm sure dumbass... just don't be too aggressive..." Bakugou trailed off as he looked over to the side.

"Ok, I'll be super gentle. Promise. Still tell me if it hurts though." Kirishima agreed as he reached over to his drawer and grabbed some lube as well as a condom.

"Why do you have a condom? We are both dudes." Bakugou asked, stopping Kirishima from opening the condom.

"Becaue it will be easier to clean up after." Kirishima paused before ducking down so his mouth was right against Bakugou's ear.

"Unless you want me to fill you up with my cum. Filly you up until your so full that you burst. I could take care of you after or I could eat you out~ the option is yours love." He whispered seductively, his lips brushing against the shell of Bakugou's ear every now and again.

Bakugou blushed darkly at the thought before taking the condom out of Kirishima's hand and throwing it across the room.

Kirishima smirked at the blond as he looked down at him.

"Good choice, I won't make you regret it." He hummed as he began to take Bakugou's pants and boxers off, quickly taking his own off as well.

Kiri then applied some lube to his fingers before putting one inside of Bakugou's twitching hole.

Bakugou made a face but didn't do much more.

"Are you okay?" Kirishima asked as he got to the bottom knuckle.

"Yeah, I just feels a little weird." Bakugou answered as Kirishima peppered kisses along his chest.

"Can I add a second one?" Kiri asked, received a nod after a minute.

So Kirishima added the second finger getting a whine of pain from the blond.

"Are you alright? We can stop, we don't have to keep going if y-" Kirishima was cut off by Bakugou pulling him down for a kiss to shut him up.

"I'm fine, I want this. It just stings a little, my pain tolerance is high so stop worrying about me." Bakugou said once they pulled apart.

"I know but I don't wanna hurt you on accident." Kirishima said as he began to scissor his fingers.

Bakugou shuttered and let out a quiet moan when he brushed against his prostate.

"Y-you won't hurt me. Now go back to where you just we-" Bakugou cut himself off with a louder moan when Kirishima found his prostate again, this time his fingers moving on it. Purposely pleasing the blond so his legs began to shake.

Kirishima stopped when he realized Bakugou was close and pulled his fingers out.

Bakugkou instantly let out a whine of protest but only got a kiss on the nose in responce.

Then without warning three fingers were inside of his ass. His body jolted at the sudden feeling as tears pricked his eyes.

"We can still stop of you want to Love." Kirishima reasured as he used his other hand to wipe the fallen tears from his lovers eyes.

"N-no, keep going. I'll get used to it soon." Bakugou insisted as he shut his eyes, taking deep constant breaths to try and calm himself down some and relax.

Kirishima nodded before going back to leaving small kisses along his body.

After another minute Kirishima began to move his fingers, spreading them so he could stretch out Bakugou's tight walls.

After a few more minutes of this Bakugou began to move his hips down onto Kirishima's fingers, moaning as he did so.

"Do you think your stretched out enough for me?" Kirishima asked, his hard dick now painful from no relief or friction.

"Yeah I think." Bakugou nodded having Kirishina take his fingers out of him.
He had to restrain himself from letting out another whine.

"Tell me if you want to stop." Kiri said as he lubed his rock hard dick up, moaning at the feeling of something touching him even if that something was just his hand.

"I know." Bakugou as he watched Kiri line up with his entrance.

Kirishima began to push the tip of his eight inch dick inside of Bakugou.

He had to restrain himself greatly from just fucking Bakugou like there was no tomorrow. He did restrain himself however because he knows this is Bakugou's first time having sex ever and didn't want to hurt him or loose his trust.

"Your doing so well Katsuki~ just a little more left to go." Kirishima let out soft praises to the slightly older boy when he got half way in.

"Your doing great baby, I swear the pain will go away soon and I'll make you feel amazing." Kirishima whispered into his ear as he pushed the rest of the way in.

Bakugou was trying his hardest to focus on Kirishima's praise instead of the pain in his ass.

A few tears of fell from his eyes but nothing too terrible.

"I'm all the way in, tell me when I can move but take your time to adjust." Kirishima mumbled against Bakugou's neck before continuing his kisses.

Bakugou's tight, warm walls felt amazing around his cock but he didn't want to say anything at the moment about that because he knew Bakugou was in pain right now.

After about five minutes Bakugou took a shakey breath in. "You can move now." He said as Kirishima picked his head up.

"Okay, I'll be gentle. Tell me if I'm too aggressive though." Kirishima said before he pulled out an inch and putting it back in.

They continued this for a while, Kirishima taking more out every other time before putting it back in.

He kept to his word and was slow and calm, making Bakugou feel every bit of him move in and out.

"Aah~ fuck! Right there Eijiro!" Bakugou said as Kirishima hit his prostate.

"Faster~ harder~ please~!" Bakugou almost begged as he moved his hips to meet with all of Kirishima's thrusts.

So Kirishima complied and went slightly faster and harder then before, hitting the boy's prostate head on over and over again.

Bakugou was a moaning mess under him now and fuck was it hot.

"Shit! Eijiro~ I'm close!" Bakugou moaned aloud only having Kirishima go faster then before as responce.

"Me too Katsuki~ cum with me baby." Kirishima whispered huskly into Bakugou's ear making the blond shiver and nod.

A minute later Bakugou came with a loud moan of Kirishima's name, swiftly sending Kirishima into his own orgasem.

Bakugou shuttered in pleasure at the feeling of Kirishima's warm seed filling him up.

"Fuck Eij." Bakugou panted as he and Kirishima caught their breath before Kirishima pulled out.

He sat back and watched his cum drip from Bakugou's pink and stretched asshole.

"Do you want me to eat you out or get you clean with a towle and bath?" Kirishima asked sweetly as he kissed Bakugou's forehead.

"Bath." Bakugou answered, struggling to keep his eyes open.

Normally he would have picked being eaten out but holy shit he was tired.

"Okay baby, let's go get you into the bath." Kirishima agreed as he picked Bakugou up and carried him into the bathroom.

He then helped bathe Bakugou and himself before getting them both dressed and carrying the mostly asleep Bakugou back to his bed.

"So how was it?" Kirishima asked wanting to know if he was bad or to aggressive or something so he could do better next time.

"Amazing. Now let's sleep, I'm tired as fuck." Bakugou said as he cuddled up to Kirishima's chest.

It was already ten thirty and he was used to going to sleep two hours ago so he was even more tired.

"Okay, I'll still try to do better next time if you want to have a next time. Love you, goodnight." Kirishima said as he ran his hands through Bakugou's hair.

"It was good this time, don't worry about it baby. Also there will definitely be a next time. Love you too, night." Bakugou said before falling asleep leaving a very satisfied and happy Kirishima awake.

Eventually though, Krishima fell asleep too, a peaceful smile resting on his lips as his grip on Bakugou relaxed.

***Bonus!***

"Kirishima, Bakugou, you never told us that you were together! I really wish you had so we didn't have to find out like we did last night." Denki said shuttering when he saw the couple walk into the lounge room.

"What do you mean Dunce face?" Bakugou asked with a harsh glare.

"He means you two were very loud in the dorm room last night while you fucked." Todoroki deadpaned instantly having both Kirishima and Bakugou blush darkly.

"Lucky me, I had headphones." Jiro laughed, tapping the dark purple headphones around her neck.

"Same." Everyone but Denki said.

"Really? I was the only one that had to suffer and hear them? Wow guys. That's cold." Denki said as he crossed his arms.

Everyone laughed and with time dropped the topic.

And that's how Kiribaku accidentally came out to all of class A.
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2,043 Words!