kiribaku + kaminari threesome drabble fic idea (long)

this is a very rough unedited, unfinished, unformatted draft for an idea i had. its been sitting in my drafts and wasnt sure if i would actually post it, so thought id at least share what i have here since i liked the direction i was headed

-          (trans bakugou) Bakugou and Kirishima on the common room couch watching movie alone later at night and they start touchin and stuff. They have a blanket on the couch that they are haphazardly using to cover themselves.

o    and maybe Kaminari and sero are listening in around the corner because they were about to come down but as they approached the common room they started hearing something… sounded like moaning and… some weird wet noises? Wait—that sounds like Bakugou? They stay hidden listening in trying to figure out whats happening then finally they hear Bakugou a little louder—“fuck, ei-“ or something and Kaminari and sero look at each other as they both just realized what the fuck was happening. “dude—it’s fucking Bakubro and kiri!” krishima whisper yelled. “shh! I know I have ears, man” Kaminari just looked dumbfounded… “h-how long—what the fuck? How long have they been doing this?! And not told us??!” Kirishima seemed genuinely hurt by the secretism from his friends. Sero seemed more weirded out by the whole thing… “I don’t know man… I mean, im not even shocked. Its just kinda weird …its like hearing your parents fuck. Feels wrong” a blush crept across kaminaris cheeks—“yeah, man… it’s totally weird…” he laughed nervously. He subtly shifted his hand over his groan, hoping sero wouldn’t notice. But that only drew his attention down to the spot Kaminari was trying to hide--

§  sero looks down to see Kaminari is hard in his shorts “dude- what the fuck?! You’re hard right now?” sero says to Kaminari in a hushed whisper, careful not to alarm Bakugou and Kirishima because Bakugou would certainly blast their faces off. Kaminari is an idiot but he cant help but admit that Bakugou sounded really fucking hot whimpering like that. Bakugou sounded way different from his typical angry yelling—he sounded… submissive. Kaminari wanted to bang his head on the wall the way his dick twitched at the thought. “c’mon bro! I’m just a guy—I’m gonna get hard if I think about sex!” sero rolls his eyes, “cuz youre a pervert, kami” Kaminari twisted his face like sero was being absolutely ridiculous. “what, I mean, don’t you at least kinda wanna… join them?” Kaminari said, nearly peaking his head around the corner to take a look, before he was yanked back by sero. “No I don’t wanna join! I don’t know if you noticed, but neither Bakugou or Kirishima are chicks. Im not sure about you, but im not into dudes.” Kaminari blushed a little, “I mean I didn’t think I was into dudes either, but Bakugou whimpering’s got me feelin sum typa way, man…” kaminari adjusted his pants to better conceal the erection that was now a noticeable tent in his shorts. Seros face twisted like he was about to gag. “if you wanna join so bad, then why don’t you?” sero asked flatly. Kaminari turned around to look at him like he wasn’t sure he heard that right “wha- huh?” sero just repeated himself, “I said why don’t you go and join them if you want to so bad.” He said, arms folded, wearing a smug grin. Kaminaris face went red—“I can’t just—ugh. Bakugou would fucking kill me” sero shrugged, “just walk in like you had no idea, see what happens” Kaminari looked at him, gears turning behind his wide eyes. He was really thinking about it. Weighing the risks—bakugou was either going to blast him to hell, or by some miracle, he could get in on that action. He was clearly thinking with his dick at this moment because he was getting closer and closer to walking in the harder he got.

o   Kaminari walks in. he didn’t think that far ahead though, because he wasnt quite sure what to do after that. He just stood there. Gawking at Bakugou clearly riding Kirishima in his lap, moaning into his neck. And kirishimas head thrown back, eyes clenched shut, clearly so gone he looked like he forgot where he was—in public. Where anyone could walk in. It wasn’t until Bakugou lifted his head from kirishimas neck—“AH—KAMINARI?!” he yelped. Kirishima immediately jolted up right, twisting around to see Kaminari looming behind them. “Denki—Holy shit man! Fucking knock next time!” Bakugou just turned to Kirishima thunking his forehead with his finger, “we’re in the common room, idiot.” Kirishima shrunk down slightly, “oh yeah… but still! What the hell?!” Kaminari  struggled to form words… “I-I didn’t mean to interrupt, um… You guys don’t have to stop-“ Kaminari says flatly, standing there blank face. Frozen. His entire body was buzzing but trying to remain calm. Like he hadn’t just been listening in for the past 15 minutes. Bakugou looked horrified, face pale and wide eyes. Kirishima the same. Bakugou sputtered “w-what the fuck, dunce face?! Were you getting off to us? Fucking knew I heard somethin’ behind that wall!” The panic in Bakugou’s vice rising with each word. Kaminari still didn’t move, but his mouth threatened a smile—“but you didn’t stop.” Kirishimas mouth dropped open, turning to Bakugou, flustered and waiting for him to lead. Bakugou looked so caught off guard--Like he knew exactly what they were doing and didn’t expect to be called out on it. He just stammered “tch. Yeah well, shouldn’t been fuckin’ listening!” kaminaris body finally loosened up a little. He folded his arms… “not my fault you guys decided to fuck in the common room.” The ash blond and redhead just stared back, knowing there was really nothing they could say to that. Play stupid games win stupid prizes. But Kirishima must’ve finally woke up from whatever post-caught-mid-nut daze he was in because his eyes flicked down-- his brow raised when he noticed when he noticed something—“denki, man… are you hard right now..?” Bakugou immediately looked for himself—when he saw it, there was a glint in his eyes. Shock, but something more… something more… hopeful? Bakugous eyes darted back up to meet kaminaris—who was still standing there arms folded, now more flustered than smug. Kaminari kept speaking without thinking… “dude, Bakugou moans like a porn star! Obviously I’m hard.” He retorts. Bakugous face dropped. He went beet red. Mortified at being compared to a porn star. “I’ll kill you, asshole—!" He barks, too quick. Kirishima gently and subtly pulls Bakugou closer, “baby,” Kirishima whispers to him under his breath, trying to calm him. Being handled like that in front of Kaminari made bakugous face blush a cute pink… he looked so soft right now. Obviously Kaminari noticed and fuck why was that so hot. “Seriously, you guys can keep going. Don’t let me stop you!” Kaminari says smugly earnest. He was really just pushing to see how far he could get. He was still locking eyes with Bakugou when he noticed Bakugou shift his hips slightly in kirishimas lap under the blanket, causing Kirishima to flinch. And Kaminari realized. Kirishima was still inside of Bakugou. His dick spasmed. Shit, he really wanted to see what was under that blanket. Kirishima turned back towards the ash blond and his hands instinctively returned to his waist. Kirishima and Bakugou looked at each other—like are we really doing this?” then Bakugou moved his hips again, more obvious this time. Kaminari forgot he was just standing there staring, his mouth started to fall open—his dick was hard as its ever been. he had the urge to touch himself--was that allowed? Was any of this allowed? Bakugou looked back up to Kaminari. He smirked as he grabbed the blanket covering them and tossed it to the side—kaminaris eyes nearly bulged out of his skull at what he saw--
Bakugou completely nude from the waist down, straddling kirishimas legs. His perfectly swollen pussy sat on the tip of Kirishima’s flushed, thick cock--only pulled out just above the waistband of his boxers.  Bakugous inner thighs glistened under the soft glow of the tv, clearly drenched and dripping… Kaminari looked again at Kirishima’s boxers and noticed they were almost entirely soaked through… shit, was Bakugou a squirter? Oh my god kaminari was about to cum in his pants—then Bakugou started moving. He suddenly sat fully down on kirishimas cock, taking all of him in—bakugou lets out a broken moan, louder than before, and Kirishima grunted in surprise. “sh-shit, kat!” Kirishima groaned. Kaminari couldn’t fucking take this. He had to touch himself right now. He reached into his boxers, but before he could start stroking, Bakugou spoke up. “you sure you wanna watch?” krishima also turned around and just raised an eyebrow, seconding bakugous question. Kaminari rolled his eyes, hand still down his pants “ive been edging for the past 20 minutes—obviously I wanna watch.” Bakugou scoffed, but with a grin like he was enjoying himself. He wrapped his arms around kirishimas neck and sat up a little, “c’mere denki,” he said, smile growing crooked. Did Bakugou just use his first name? that’s definitely never happened before… Kaminari hesitated, then he stepped slowly—making sure Bakugou was serious. But Bakugou just looked at him, waiting. Kaminari walked around the couch, sitting in the spot right next to them. Too close now. And why was the couch so warm? was it… wet..? he shifted a little. wait—oh my god. The image of Bakugou squirting on the couch instantly played in his head and he was ready to tear his pants off and get to work. Then he heard chuckling from the two next to him—kaminaris eyes turned to see them both staring smug. He tried to speak but there was no playing it cool with how overwhelmed and into this he was. “d-did you..?” Kaminari started. Bakugou bit his lip. Nodded. Kaminari just let out a breath—“that’s so hot-“ Bakugou just turned back to Kirishima, who was feeling him up under his shirt.  “you aint seen shit yet,” Bakugou muttered. Kirishima suddenly started lifting bakugous hips with his hands, pushing him up and down on his cock.