Warnings: threesome, fem!reader, m/m/f, oral (m & f receiving), fingering, rimming, anal, orgasm denial, dom/sub, names calling, poly relationship, unprotected p in a & p in v
Synopsis: Bakugo's birthday is a special day, and you with Kirishima plan a steamy morning for your boyfriend
A/N: the prompt is: threesome for Bakugo's birthday ft. Kirishima
I decided to post this one a bit earlier. Happy birthday, my sweet little gremlin!
MY HERO ACADEMIA MASTERLIST BAKUGO'S BIRTHDAY EVENT 2024
Despite being pro heroes, Bakugo and Kirishima shared their flat with you, a sidekick working for their hero agency.
You weren't quite sure how it began, but eventually, you found yourself in a relationship with not just one, but both of your bosses.
And you didn't mind in the slightest. Both of them were such distinct personalities, and you felt privileged to know both sides of them.
Kirishima, known for his gentle nature, was not only as endearing and sweet as a puppy in public but also had a darker side that yearned to dominate those around him in his private life.
Bakugo, on the other hand, was the most snarky, driven, and grumpy man you'd ever met. Yet, behind the doors of your luxury apartment, he was quieter than his public persona, often letting Kirishima take the lead in decision-making.
Today, however, wasn't just any ordinary date on the calendar. It was April 20th - Bakugo's birthday.
Of course, Dynamight wasn't one for celebrations. He saw them as mundane and completely unnecessary ways to mark getting one year closer to the inevitable end, as he often referred to birthdays.
After all, it was Bakugo's birthday, and with a little help from you, Kirishima had planned a surprise that would leave Dynamight speechless.
As the first rays of the sun peeked through the curtains, Bakugo was rudely awakened by a firm hand gripping his already hard cock. He was having a vivid, wet dream about you and Eijiro when he was jolted awake by the rubbing sensation, growling in frustration. Katsuki groaned, his crimson eyes fluttering open to see Kirishima's smirking face.
"Happy birthday, Kats," red-haired purred, his hand moving up and down Bakugo's shaft. "Were you having naughty dreams again? I bet you were, considering you were grinding your dick against my ass in your sleep," Eijiro chuckled softly, lying on his side and watching Katsuki.
Bakugo grunted, his hips bucking up into Kirishima's hand. "Shut up, Eijiro," he growled, his voice husky with sleep and slowly accumulating desire.
Kirishima leaned down, capturing Bakugo's lips in a searing kiss. Their tongues danced together, exploring each other's mouths with a familiarity that only came from years of being lovers.
Bakugo's hands found their way into Kirishima's fiery locks, pulling him closer, deepening the kiss.
Breaking the kiss, Kirishima trailed wet, open-mouthed kisses down Bakugo's neck, nibbling and sucking on the tender skin, leaving marks that would last for days.
Bakugo groaned, his head falling back as Kirishima's sharp teeth scraped against his collarbone. Kirishima's hand never stopped moving, pumping Bakugo's cock with a steady rhythm that had Bakugo writhing beneath him.
Moving lower, Kirishima licked and sucked on Bakugo's pierced nipples, causing Bakugo to hiss and arch his back slightly. Bakugo's hands moved from Kirishima's hair to his shoulders, his nails digging into the firm muscles as he tried to regain some control.
But Kirishima was having none of it. He pushed Bakugo's hands away, pinning them above his head as he continued his assault on Dynamight's body.
Bakugo struggled, trying to free his hands, but Kirishima proved to be stronger, at least this time. "Eijiro," Bakugo growled, his eyes flashing with an anger that was quickly replaced by arousal.
Kirishima just smirked, releasing Bakugo's hands and moving lower. He licked a trail down Bakugo's stomach, his tongue dipping into the navel before moving lower still, along Katsuki’s blond happy trail. Bakugo's cock twitched in anticipation, and Kirishima blew a cool breath over the head, causing Bakugo to groan and buck his hips.
“Fuck,” the blond-haired man grunted deeply.
The birthday boy wasn't aware that you were seated in his armchair on the opposite side of the room, watching the scene unfold with anticipation.
You couldn't deny it, watching boys together was a massive turn-on. Especially when Kirishima took charge — he was always slow and passionate, unlike Katsuki, who went straight for the main event at the first opportunity.
Without warning, Eijiro took Katsuki's cock into his mouth, sucking hard.
Bakugo's eyes rolled to the back of his head as he let out a guttural moan, his hands fisting the sheets as Kirishima's head bobbed up and down. Kirishima's tongue swirled around the head, lapping up the precum that was already leaking out.
Bakugo, who was usually so brash and aggressive, seemed almost vulnerable at this moment.
Kirishima bobbed his head up and down, his mouth working Bakugo's cock expertly, his tongue swirling around the tip, making Bakugo moan louder. Kirishima cast glances at Bakugo's flushed face from beneath his long, dark lashes.
Why did guys always have such great lashes? You pouted to yourself, pondering the unfairness of it all while fondling your breasts.
"Oh, fuck, Kirishima… Yes, just like that," Bakugo moaned, his hips thrusting forward, his cock hitting the back of Kirishima's throat.
Eijiro gagged slightly but didn't stop, his hands now working Bakugo's balls.
Katsuki’s cock was hard as steel, his tip aggressively red, his entire shaft throbbing with desire.
Just when Bakugo thought he couldn't take it anymore, Kirishima stopped, releasing Bakugo's cock with a pop. "Not yet, handsome," Eijiro mused, trailing his tongue slowly up Dynamight's body. "You need to earn your orgasm," the red-haired cooed.
A frown creased Bakugo's forehead; the blond panted, attempting to thrust his hips to create friction against Eijiro's abdomen, but it was futile. "You're a fucking tease," Katsuki growled, then pulled Eijiro into a heated kiss, wrapping one arm around his neck.
Red Riot pulled back from the kiss after a moment, giving Katsuki's temple a peck. "We've got a spectator," he whispered in a seductive tone, turning to you with a wink.
Bakugo shifted his gaze, and you could swear his cheeks deepened in colour upon seeing you there, dressed only in your lacy, white underwear, watching them with a slight bite to your lower lip. "Hey, Katsy," you greeted him softly.
It wasn't the first time you'd been intimate with either of them, though. The arrangement was straightforward — you could be with each other whenever the mood struck, but it stayed behind closed doors - the boys didn't want the world to know they were in a poly relationship. The media would catch wind of it in no time, and it could actually harm their reputations. And you'd always respected that boundary. You found yourself leaning more towards Kirishima, appreciating the gentler nature of your sex with him compared to Bakugo's roughness. But you’d never been with both of them at the same time.
You rose from your spot with a sway in your hips, making your way to the bed. With a flick of your fingers, you unclasped your bra, letting it drop to the floor with a soft thud. Like a predator stalking its prey, you crept onto the bed towards the boys, planting a kiss on Kirishima's lips before turning to Bakugo. "Happy birthday, Dynamight," you whispered in his ear, teasingly licking his earlobe. You turned to him a second later, your eyes meeting his crimson ones, and you saw the pure hunger in them. You leaned in, your lips brushing his slightly chapped ones, a soft, slow kiss that promised a day filled with passion and pleasure.
Katsuki’s hand reached up, cupping your cheek, deepening the kiss, his tongue exploring yours.
Your hands roamed his body, feeling the hard planes of his muscles beneath the pads of your fingers, your digits tracing the lines of his abs. You felt his cock stir against your palm, hardening even more with each passing second. You broke the kiss, your lips trailing down his neck, licking and nibbling, eliciting a low groan from him. You lazily stroked his shaft, gently sucking on the pulse point on the side of his neck, ensuring to leave a hickey behind, a sign of your fondness for one and only Bakugo Katsuki.
"You two idiots are spoiling me rotten today," Bakugo growled, rolling his head back on his pillow. “Goddamn, this feels so fucking good. Happy birthday to me, I guess," he growled, his voice low and husky.
You felt his calloused fingers traced a path down your spine, sending shivers down your body as you started jerking him faster.
With one swift motion, he rolled on top of you, effortlessly pinning you down on the mattress and peppering your chest with kisses and nips. He then got off you, kneeling beside your head and stroking his own cock. "Be a good girl and open that pretty mouth for me," he commanded.
You complied without hesitation, welcoming the mushroom head of his cock onto your flexed tongue seconds later.
Meanwhile, Kirishima took off his sweatpants, watching the two of you while lazily stroking himself. "Shit, you guys are so hot," the red-haired whispered, giving his own palm a lick before returning to stroke his dick.
Bakugo was surprisingly gentle with you this time, slowly moving his hips as he kissed you deeply. Of course, he couldn't resist fondling your breasts and slipping his rough hand between your thighs, rubbing your folds through the lace of your panties. “Someone’s wet, tsk!” he commanded with a grin that curled the corners of his lips upwards.
You used your hand to slide his foreskin a few times after pulling his cock out of your mouth to spit on its head. All the while, you glanced up at him, admiring the slight frown creasing his forehead as he hissed, watching you work. With your free hand, you gently cupped and fondled his ball sack between your fingers.
“Shit,” Bakugo rolled his head back a little. "This little minx is going to be the death of me one day."
Kirishima couldn't hold back any longer and knelt beside you as well, leaning in to playfully suck on Katsuki's nipples, toying with his barbells. "Kats, love," Kirishima whispered after sharing a passionate kiss with his boyfriend. "I want to... I need to fuck you, please," his voice was nothing but a plea.
Bakugo grabbed a fistful of your hair, gently pulling your head back, earning himself a sad pout from you. He glanced at Kirishima, giving the red-haired's cock a few quick strokes after spitting on its tip. "Go ahead."
Kirishima moved to kneel behind Bakugo, admiring his boyfriend’s tight ass. He licked his lips in anticipation, knowing that he was about to give Bakugo the best morning of his life. His strong hands spread Bakugo’s cheeks apart. He leaned in and licked Katsuki's hole, his tongue swirling around it, making it wet and ready for his fingers. He flicked his tongue against the puckered hole several times, humming. Then, Eijiro reached for the nightstand and grabbed a bottle of lube, squirting some onto his fingers.
Bakugo moaned as Kirishima inserted one finger, then two, into his ass, moving them in and out in a slow and steady rhythm. “Suck my cock,” he growled, lightly tapping your cheek to grab your attention as you were completely engrossed in listening to his pants while Kirishima fucked his ass.
As the obedient girl you were, you ran the tip of your tongue along your lips to moist them and took his throbbing cock into your mouth again, gently bobbing your head back and forth as Bakugo resumed rubbing your pussy.
He pushed your panties aside, revealing your glistening pussy, juices already escaping due to your intense arousal you were experiencing. “Tsk, you naughty brat,” Bakugo growled as he pushed two of his fingers inside you, his thumb rubbing circles on your clit, eliciting a loud moan from you; your sounds were muffled by his throbbing member fucking your mouth.
Kirishima could tell that Katsuki was ready, so he lubed up his cock and lined himself with his boyfriend’s ass, gently poking the tight hole as he slowly entered Bakugo's ass.
Bakugo's breath caught as he felt the fullness of Kirishima's cock inside him, stretching him to the limit. “Fuck.”
Kirishima's movements were slow and deliberate, allowing Bakugo to adjust to the sensation.
Soon, Bakugo's moans grew louder, and he pushed back against Kirishima, urging him to move faster.
Kirishima obliged, his hips snapping forward as he thrust into Bakugo over and over again. “You’re so tight for me, handsome,” the red-haired praised.
Bakugo's hands gripped your hair tightly as he kept on fucking your mouth, his knuckles white as he felt the tight knot building inside of his tummy. “Fuck, fuck, fuck, I’m gonna cum,” the blond warned in a husky voice.
Kirishima's hand reached around, finding Katsuki’s cock and stroking it in time with his thrusts. Eijiro's thrusts grew more urgent, his own moans mingling with Bakugo's. "No, no, no, handsome. You'll cum when I say so. This time, you're not in charge here," Kirishima growled, nibbling at the back of Katsuki's neck, increasing his pace. Red Riot gripped Dynamight's hips tighter, pounding into him relentlessly, their bodies slick with sweat.
Bakugo's moans grew louder, his body tensing as he neared his climax. With a final thrust, Kirishima nearly sent Bakugo over the edge, his cock throbbing inside of Katsuki as he spilled his seed in his boyfriend’s asshole, slowly pulling out, watching his semen trickle out and pooling on the sheets between Bakugo’s legs. “Holy shit, Kats, I love you so much,” Eijiro grabbed Katsuki’s chin and turned his head around to kiss him passionately.
Bakugo's cock throbbed intensely in your mouth, and just when you thought he was about to release, he pulled away, muttering something about fucking you hard. You couldn't quite catch his words though; your mind was still foggy from watching the boys getting laid.
Moments later, all you felt was a rough tug at your ankle, causing you to slide towards the center of the bed. Bakugo leaned forward, planting kisses along the valley between your breasts and trailing his warm, wet tongue down your body. With his canines, he caught the edge of your panties and pulled them down your legs. Then, he nuzzled his nose against your moist mound, inhaling the strong, multifaceted scent of your arousal. Bakugo didn't hold back of course, eagerly licking your slit and lightly nibbling your clit, savoring the taste of your wetness on his tongue. “Fuck, you’re so delicious, little cunt,” he murmured, blowing cold air on your slick entrance which made you shudder in pleasure. He sucked your pussy lips into his mouth and let them go after a moment with a loud, wet sound.
Soon, you felt the tip of his cock rubbing up and down against your entrance, all hot and hard.
He positioned himself at your entrance and pushed inside roughly, making you cry out in pleasure and pain. He was monstrous, filling you up completely.
Kirishima lay beside you, slowly tracing his tongue along your collarbones before moving down your chest, flicking his tongue around your perky nipples.
Bakugo’s cock was slamming into your pussy with a force that made you see stars.
“That’s it, slut, that’s it,” Katsuki growled, a bead of sweat forming on his temple as he kept on fucking you hard enough to make the bed creak to the rhythm of his thrusts. He was relentless, fucking you with a ferocity that literally took your breath away.
The sound of skin slapping against skin filled the room, mingling with your moans and gasps. Bakugo's thrusts became erratic, his grip on your hips tightening as he chased his release. He reached out to rub your clit, his fingers roughly circling it as he continued to pound into you, slapping your slit from time to time. “Who’s been such a naughty, needy slut?” He hissed through clenched teeth.
"I was, I was!" you whined, threading one hand into Kirishima's hair as he teased your nipples, while the other gripped Bakugo's forearm as if trying to anchor yourself.
Dynamight’s tip grazed all the right spots inside you, and you rolled your hips, craving more friction while moaning his name.
Suddenly, Bakugo gripped your hips tightly, lifting them off the mattress effortlessly. This forced you to arch your back as he thrust into you from a new angle, reaching deeper than before, penetrating the deepest parts of your sweet pussy. He turned his gaze towards Kirishima, pleading evident in his crimson eyes, silently begging for permission to finally reach his climax.
With a merciful nod, Eijiro spoke up, "You've been such a good, patient boy. You can cum now, handsome."
With a final, particularly hard thrust, Bakugo came, his cock spurting cum inside you, his orgasm ripping through him, causing him to cry out in ecstasy. “Ooooooughhh, God! Fuuuuck!”
Your orgasm followed shortly after, and your pussy clenched around his dick rhythmically, your juices coating his shaft entirely as you screamed his name, repeating it like a mantra.
You both collapsed onto the bed, your bodies slick with sweat and cum.
"Happy birthday, Katsuki," you whispered, your voice hoarse from screaming as you reached your hand out to stroke his slightly unshaven cheek.
"Happy birthday, my love," Kirishima accompanied, pressing a kiss to Katsuki’s forehead.
tagging: @shonen-brainrot @gold24fish @b134ch-m4h-ey3z @proherodabisballsack @bakugoscunny @misafiryanki @hornydynamight @pridefulbakugou @einexx @crystalwolfblog @doumaslotus
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