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Dismantling a Bicycle

Summary:

When the title of Class Bicycle gets passed from Sero to Bakugou, there's a certain tradition they must abide: they have to fuck in front of everyone else to “exchange” the title. But who's to say that Sero can't have a bit of fun and teach Bakugou how to please their classmates at the same time?

Notes:

Wooooo! This was so fun to write, and thank you, Shinii, for this opportunity to write for the Shinii Bang Zine! Happy birthday and that you enjoy it as much as SeroBaku did ;)

(See the end of the work for more notes.)

Work Text:

The first slap to the ass after his name is drawn comes from Todoroki of all people.

“Fuck!” Bakugou shouts as he clutches his behind, whirling around to the sight of Todoroki with a slightly surprised expression and a smoking hand to boot. “What the fuck, half-and-half?!”

“Your name got drawn.”

“That doesn’t mean you can—!”

Bakugou’s outburst is cut off when hands suddenly wrap around his slim waist and he’s being pulled into another’s embrace.

“Cheer up, Katsuki,” Sero drawls and Bakugou involuntarily shivers as he recognizes that tone from far too many sessions in the bedroom. “It’s a cause for celebration.”

“And a farewell party!” Someone shouts.

“And a farewell,” Sero agrees. “Live a little.”

Bakugou scowls, squirming in Sero’s embrace until he wrenches free. He turns around and glowers.

“This is all your fault.”

“My fault?” Sero grins, edging into Bakugou’s space again. His hands drift up Bakugou’s back and stroke the edges of his shoulder blades, knowing all the spots Bakugou likes to be touched.

Bakugou tries not to give in. “Your fault,” he repeats. “You picked my name.”

“Mm,” Sero tugs Bakugou in close by the waist, their hips bumping against each other. Bakugou inhales and minutely shudders, feeling the bulge pressing against his thigh; Sero has never been subtle. “Maybe,” Sero confesses as he noses Bakugou’s hairline and plants a kiss between furrowed brows. The wrinkle there ceases. “Or maybe it was all just luck.”

Bakugou snorts. Luck. What a dumb concept. It wasn’t luck that got Bakugou into Sero’s bed, and it certainly wasn’t luck that Bakugou found himself wanting more. Sero just had that magnetism about him that he couldn’t resist.

There’s a sudden crash and heavy thump as something hits the floor, and Bakugou turns his head to see Iida straightening out the mattress Kirishima and Ojiro had brought from the upper floors, Tokoyami laying out a black bedsheet on top.

“Thanks, guys,” Sero calls out, and suddenly Bakugou is aware of their other classmates staring at them, their gazes prickling his skin.

He doesn’t have time to think about how that makes him feel, however. Not when Sero pushes him backwards, he trips over the mattress and lands with a thud, heart hammering in his chest. It only pounds faster when Sero follows close behind, straddling him, and yanking his shirt off over his head.

Sero grins down at him, a boyish smile that has Bakugou’s cheeks staining a lovely pink.

“Now let’s get started, shall we?”

***

Class 1-A had a tradition—well, it was less of a tradition since it had only been their first year hosting it, but the idea still stood—where a student would be picked to be the “Class Bicycle” for that school year. The concept was simple: anytime someone wanted to seek sexual relief, they could use the Class Bicycle for their needs without fuss or an awkward date. The Class Bicycle’s room was never locked unless they were helping someone else, and they were basically free to use for anyone at any time of the day outside class hours. (Sero can admit that he’s fucked a few people during class hours though.)

In and out, the arrangement promised an easy stress reliever method for students of a rigorous program. Of course, since the system relied solely on a single person to meet the needs of every other person in the class, there was only one stipulation to using the Class Bicycle: one had to be willing to be a potential candidate for the next year’s Class Bicycle.

Bakugou had initially scoffed at the idea, believing he didn’t need to resort to such indecent methods to get through the Hero Program, but as the weeks went on, he found himself hunched over the communal showers, furiously rubbing one out just so he could sleep deeply at night… and well, he’s man enough to admit that he succumbed too.

He was also willing to concede that the decision had been made considerably easier because Sero had been last year’s Class Bicycle. Sero, with his devilish smile, long fingers, and a fat cock Bakugou didn’t mind riding. Sero, who’s now tilting his chin up for a kiss, coy lips teasing his, as his hands slip past Bakugou’s waistband.

Bakugou sighs into the kiss. His hips rise to help Sero peel his pants off of him, and he grips Sero’s forearms when long palms spread his legs. The touch is so familiar, he nearly forgets where they are until someone off to the side groans and breaks the mood.

Bakugou cuts off the kiss, glaring over Sero’s shoulder. Kaminari smiles sheepishly at him.

“Sorry,” he says.

However, Bakugou doesn’t have time to scold him for interrupting before Sero latches onto a special spot on his neck, and he’s forced to melt back under Sero’s ministrations.

Sero knows what he’s thinking. “C’mon, Katsuki,” he coaxes as he slides his hands up Bakugou’s shirt and squeezes his tits, teasing his nipples between the webbing of his fingers. “It’s fun.”

Right. The “fun”. An exhibition to “exchange” the Class Bicycle position between the previous year’s titleholder and the newly picked one. It’s silly; Bakugou’s just as willing to take on the duties without this show that’s clearly used to indulge everyone’s exhibitionism kink. And yet… as Sero grinds his clothed bulge against his naked crotch, he can’t help but arch into it.

“Fine,” Bakugou grits out, trying not to sound too eager. “Let’s get this over with.”

Sero laughs as he sits back and shucks his own pants off. “You wound me, Katsuki. I’d thought you’d be more enthusiastic about this.”

Bakugou scowls. He frowns the entire time Sero frees his half-chubbed cock and graciously accepts lube from Iida. The rest of the room seems to have picked up on Bakugou’s annoyance, though—they shift and move around the room as they try to find the best spots to watch the show, but none of them make a peep or comment to interrupt the performers.

The slide in should be perfunctory—yet with Sero, it never is.

Bakugou groans, pushing away Sero’s head as the man leans down, tongue out. “Just put it in,” he grouses. 

Sero gently takes Bakugou’s hand and kisses his palm, smiling as the action causes pink spots to blotch Bakugou’s cheeks. “Patience,” he says. “Some of them prefer it nice and slow.”

Nice and slow, his ass. Bakugou remembers exactly the way Sero had carved into him round after round, railing his insides until his ass smarted, and he had to beg Sero to let him take a breather. But—Bakugou thinks, as he eyes Iida stroking a hefty cock with firm but steady twists—perhaps it’s true not everyone is the same as him.

“Fine,” he acquiesces, pouting a little, and his moue doesn’t go away even after Sero kisses it. “Show me what you got.”

Sero settles between Bakugou’s legs, and Bakugou lets out a shaky exhale as he lies back. The ceiling lights in the common room create a different atmosphere compared to Sero’s room, but he can do this; there’s still a simmer of heat between his legs that he willingly lets Sero have access to.

The first lick has him moaning in surprise, hands already flying to Sero’s mullet to tug him closer to his dick. Sero sucks on the nub, tonguing it when Bakugou jerks, and humming to make him spasm even harder.

“Haah…!”

“He particularly likes it when he’s being sucked off,” Sero comments.

Bakugou twists his hair in retaliation, but Sero doesn’t stop speaking—verbalizing what he’s doing right into Bakugou’s sopping entrance.

“And he’s usually loose enough to take two from the get-go,” Sero explains, proving his point as two of his bony fingers slide right into Bakugou without any resistance.

Bakugou gasps as Sero easily finds his sweet spot, a gush of slick paving the way as his knees tremble around Sero’s shoulders, and he covers his mouth with a hand to hide his whimper. It’s impossible to forget how many skills Sero has picked up in his year as the Class Bicycle, twisting and playing Bakugou like a fiddle as he strokes in all the right places and speeds up his thrusts sporadically, causing Bakugou to jerk in desperation.

“Shut—shut up,” Bakugou whines as Sero does something that makes his heels scrabble against the mattress.

Thankfully, Sero does shut up. Unfortunately, he does so by pulling his fingers out and replacing his digits with his devious tongue.

Bakugou’s wail soars above the volume of everyone’s murmurs, and he has the sense to bite his fist to muffle his noises as his back arches at a particularly sinuous undulation of Sero’s tongue against his inner walls. Despite his best efforts, however, his sounds do not shield him from embarrassment, and he only feels the deep burn of self-consciousness further when his skin heats up from a full-body flush.

“Sero—Hanta,” Bakugou gasps, no, pleads as he tugs at Sero’s hair desperately. Sero moans in response, and Bakugou nearly cusses him out about his hair-pulling kink as he tries to wrangle him away from his quivering hole. “Hanta—please, I’m gonna—”

Sero, thankfully or regretfully, pulls away right as Bakugou’s on the cusp of his orgasm, and immediately, Bakugou sags against the bed, breathless and boneless at the torturous denial he’d just been subjected to.

“You bastard,” he swears as Sero laughs and clambers upwards.

He scoops Bakugou’s legs up by the back of his knees, creating a space for himself and Bakugou flushes when he hears multiple people moving in for a closer look. Sero’s cock rests on top of Bakugou’s as he settles, and he shivers as Sero aligns them.

The first press of Sero’s dick against his hole has him nearly jerking downwards to take it all, but Sero forces him to wait, holds him still with a hand on his belly as he flashes Bakugou a coy grin, not a single look of apologetic-ness present.

“Nice and slow, remember?”

Bakugou bites back a remark only because Sero has taken himself in hand and started stroking Bakugou’s rim with the head of his cock. He groans instead. Every subtle press tests the give of his hole, and every withdrawal makes his veins buzz. He’s driven crazy by it, especially since he’s a fan of the fast and hard fucks, but he wills himself not to concede.

“Who even likes this?” He complains after the nth time Sero teases him cruelly.

Sero hums. “Denki, sometimes Mashirao—”

“—Hanta!”

“—and you,” Sero finishes listing, shit-eating grin directed down at Bakugou’s scowling expression.

“I do not.”

“Really? Then what’s this?”

Without warning, Sero suddenly sinks his cock fast and straight into Bakugou, startling a yelp out of the blond as he’s hilted in one go.

“Ah!”

But Sero isn’t nice. Not with Bakugou. His cock pulls out, drawing out a whine before pummelling back in, just as harshly as the first thrust.

“Fuck!”

But there’s no pain or discomfort, only Bakugou’s arousal easing the way. The squelching of his sopping insides is immediately exposed to the crowd as Sero finally gives him what he’s been begging for the entire time, and all Bakugou can do is lie there and take it. Air is punched out of his lungs every time Sero fucks into him and the loose whiny sounds that release into the room each time Sero draws back are from him.

Bakugou is succumbing fast. Yet, it’s the only thing he craves to take. Sero’s hot pulsing cock, carving out a shape just for him, battering that spot in the back of Bakugou’s walls that has him screaming. He’s scrabbling to hold on, arms above his head and finding no purchase as his legs spread even wider to enjoy the delicious impact of Sero’s hips against his in even more areas.

“Hanta!” Bakugou pants, mind going dizzy with the relentless pace Sero is setting. “Fuck, hngh, slow down. Fuck!”

Sero gives him a few more hammering thrusts before pausing, but Bakugou has no chance to appreciate the reprieve when, instead, Sero grinds into him. Like this, his dick is subjected to the firm surface of Sero’s abs, and being squashed and rubbed into a reddened mess only intensifies when Sero stirs his own cock inside Bakugou’s walls, churning up whatever lube and slick he has left.

“F—uck!” Bakugou warbles. His legs kick out, only to be caught and folded to his chest, toes angled outwards.

“Careful,” Sero teases. “If you behave like that with Tenya, he’ll take you over the knee.”

Bakugou groans and shuts his eyes, the image appearing a little too vividly in his mind. Iida, with his big, wide palms, landing back-arching spanks one after the other. His ass—bruised purple and blue before hobbling back to Sero for much-needed relief.

“Heh, you like that, don’t you? You got all tight around me.”

“Fuck you,” Bakugou mutters, but he can’t deny the truth. Still, he has his dignity to preserve, and he tries to do so by tipping his head back to let out a shaky exhale. He can do this. If he cums from just words, he’ll never be able to live it down.

“Or,” Sero resumes rocking his hips, the head of his cock nudging deeper with every motion. “You wanna be tied up? Fumikage is good with ropes. Ask him to leave you in the common room and anyone can just take a few seconds to make you cum.”

“Shut up,” Bakugou grunts, hips jerking minutely with Sero’s body. His skin still feels too hot, feverish, from Sero’s dirty fantasies. “I’m not that easy,” he mutters.

Sero chuckles at the statement but doesn’t counter. Instead, he keeps shifting inside Bakugou, continuing with the minute pace until Bakugou’s skin is prickling with anticipation. He tenses when Sero hooks his knees over his shoulders, prepared for an onslaught, but it turns out Sero only wants to suck at the skin on the side of his leg, purpling marks making the muscles in his calves twitch.

“Seriously?” Bakugou complains.

Sero smirks down at him, and Bakugou forgets how much of a tease Sero is once again.

“‘Slow down.’ Isn’t that what you said?”

“Fuck off, I didn’t say ‘mind-numbing sex’. How am I supposed to cum like this?”

Sero chuckles. “Maybe next time you should just listen. After all,” Sero sinks in deep, “you’re going to have to do a lot more of that.”

Bakugou growls, but Sero pulls out before nudging him to turn over. As Bakugou settles on his knees and propped elbows, he feels Sero tracing a finger down his spine to his ass, prying aside a cheek to poke at his asshole.

“Hey.”

Bakugou glares over his shoulder when Sero continues to play with his pucker, even going as far as to prod at the dry entrance. Sero’s eyes never leave his ass as he speaks.

“Remind me to teach you how to stretch yourself. Eijirou and Hitoshi are ass men.”

Bakugou rolls his eyes, but his breath hitches in anticipation when Sero’s cock comes back to nudge at his slick hole. It slips in easily and Bakugou moans as the new angle makes him clench tighter around Sero’s dick, the heightened feeling of a bigger girth sending tendrils of arousal into his core. When Sero slides in all the way, he moves his hips back and forth, warming up before really fucking Bakugou.

Bakugou cries out as the next thrust comes punishing and fast, rocking forward with the motion and letting out a squeak as he nearly falls onto the mattress. The readjustment to stabilize his arms beneath him is a struggle, and as Bakugou fumbles to hold himself up, Sero takes that opportunity to push him down.

“Hey!”

But Bakugou doesn’t have the power to complain or contain his noises. Not when Sero snaps his hips in the next second and takes all the wind out of him. Like this, the angle from this position is even harsher, and as the limits of his back are tested, Bakugou cries out, knees slipping to escape once more.

“Nope.”

Sero catches him by the waist, yanking Bakugou back onto his cock as their bodies meet in a cacophony of wet smacks and squeaking springs, the mattress bouncing through their feral thrusts. As Bakugou shifts up the bedding, only to be wrenched back each time, the mattress slides as well, instability making it hard for Sero to get a better grip.

Suddenly, multiple weights pin down the bed, holding it still, and Sero takes his gaze away from where Bakugou’s insides are eagerly accepting his cock to the audience around them.

“Heh.”

A hand fists Bakugou’s hair, startling a moan out of him, and he’s forced to lift his head as Sero angles him towards the set of knees before him.

“Look, Katsuki.”

Bakugou looks up. The rest of their classmates have left their seats to crowd around them, their bodies perched on the edge of the mattress as they stroke themselves, pants either gone or pulled down to free their naked cocks.

Sero folds himself over Bakugou, murmuring into his ear, and his hips pump even faster, battering Bakugou’s insides.

“Open your mouth, Katsuki. We should thank them.”

Bakugou barely has enough time to get his tongue out before the first spurt of cum hits him across the chin and he closes his eyes to receive another splash on his cheek.

Poor aimers. All of them.

Bakugou gasps as more stripes of warm cum marks his neck, thighs, and back. He can hear Sero ‘aah’-ing and smacking his lips as he too, receives his own number of cumshots, hips never ceasing to thrust in Bakugou. A chorus of moans come from their audience as they continue to strip their cocks and spray across them, and Bakugou pants, feeling filthier by the second as more covers his skin in varying sizes of globs.

Ropes of white drip off their sticky bodies as they continue to fuck, the urgency to cum as well rising to a peak as they felt their classmates reach their orgasms. Bakugou pushes his ass back, taking Sero at his own hurried pace, as Sero thrusts into him too, and the resounding slam of their sexes hike even louder in volume as they ache to finish.

“Fuck, fuck!”

Bakugou clamps down on Sero when a barrage of strokes smacks his sweet spot, and the answering curse is a warning when suddenly, hot, thick spend gushes into Bakugou’s insides.

“Ah!”

Bakugou’s thighs quake as he cums as well, the virile heavy seed of Sero’s climax triggering his own, and he immediately sags as his body gives out, collapsing onto the mattress with an exhausted groan. Sero’s dick gives out a few more healthy spurts before he pulls out, and without a cock in him at last, Bakugou finally closes his eyes.

Sero laughs. “C’mon, Katsuki.” His annoying fingers play with the opening of Bakugou’s stretched-out hole, but Bakugou doesn’t have enough energy to protest when they dip in, coating Sero’s fingers thoroughly in dripping fluids. “Your stamina will need to do better than that, especially after one fuck.”

“Fuck off,” Bakugou groans.

But he can’t help it either when his ass hitches up at Sero trailing his freshly-lubed hand to the swell of his cheeks, his unused rim clenching in anticipation.

“Gather around close, everyone,” Sero calls as his fingers push into Bakugou’s virgin ass without a second thought. “You won’t want to miss this.”

Notes:

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