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Summary:

Request: Kirishima x Chubby!Reader Fluff (“Again, just another request to mess with Sapphire (・`ω´)")

 

Summary: Kirishima Eijirou is known throughout U.A. for his unwavering enthusiasm, amazing use of his quirk, and (mostly amongst the ladies) his incredible physique. The boy is literally a walking piece of strong, corded muscle. He captures the hearts of many young girls who swoon for his attention, but what will they say when they see the human piece of rock dating someone his complete opposite? A girl made of soft skin and big thighs?

Notes:

Lmaoooooooooo, this is the best thing I’ve written in a while. As a thiccum myself, it’s so gratifying being able to put out some work that gives some love to big girls like me. I hope y’all enjoy.

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

Work Text:

“Oh my god, do you see him?”
“Ooooh, it’s him!”
“His eyes are like a flame, drawing me in…”
“Screw his eyes, look at his abs!”
“Look at his ass!”

The group of girls continued to fawn over Kirishima from afar, their thirsty eyes hungrily drinking in his chiseled physique and form. Standing in line for lunch, Kirishima turned towards the gazing girls, unaware of their mental undressing of him.

Forever a boy with pure intentions and heart, he smiled brightly at the girls. He turned back to a grumbling Bakugou just as the middle one, (“His eyes are a flame…”) fainted in response.

Bakugou rolled his eyes as he moved with the line, grumbling in annoyance as he watched Kirishima wave to another small group of girls who immediately erupted into a giggling, blushing mess.

“I don’t get why you entertain those shitty girls.” He remarked, crimson eyes sharp as they connected with the goofy smile that was on his friends face. Kirishima shrugged. “Why not? It’s harmless. Plus,” He raised a clenched fist and pounded it against his chest lightly. “It would be unmanly to not acknowledge the waves of a school mate!”

Bakugou scoffed, a light “dumbass” muttered under his breath as he shoved his hands into his pocket. He and Kirishima continued to crawl at a snail’s pace, waiting to receive their lunch.

_______________________

Bakugou's left eye began twitching erratically as he sat at his desk, steam practically leaving his ears. A snarl was on the tip of his tongue as he watched the never-ending swarm of girls flock around a clueless Karishma, their hungry eyes undressing him with each passing glance.

Bakugou huffed and settled into his seat, trying to drown out the incessant yapping of the GD girls who were currently invading 1-A’s classroom. Aizawa had informed his students that the General Ed's Department would be stopping by to check out the other departments to get to know their fellow schoolmates.

‘I don't understand why we have to entertain these stupid rejects,’ Bakugou sunk even further into his seat, eyes glaring at anything and everything. He felt his irritation rise when he overheard Denki and Sero showing off to some of the girls, said females swooning over their exaggerated re-telling of the USJ attack that happened just a month ago.

“Dumbasses…” He muttered to no one in particular. A small part of Bakugou was applauding himself on keeping his cool for so long. Not once has he snapped at a GD student yet, and even better, he hasn’t had to say anything yet. Not to jinx anything, but maybe (Y/N)'s lessons were actually working-

Bakugou stopped his train of thought as his eyes widened in shock. Crimson orbs met wide Vermilion, shock expressed through them as well. One of the GD girls was actually brave enough to cop a feel of Kirishima's ass, her eyes lecherous as she continued to feel up Bakugou’s best friend.

All rational thinking flew out the window as white-hot rage overtook Bakugou. Standing up from his desk, Bakugou wasted no time walking from his desk to where the flustered Kirishima and pervy GD girl were, the latter unaware of her impending doom.

The other girls saw Bakugou's approach and scattered, terrified of the boy's frightening aura that he gave off. A visible sweatshop appeared on Kirishima's forehead as he saw his friend approach. “Bakubro…” Bakugou ignored him and stopped right behind the lecherous girl.

The girl was unaware of the explosive death behind her, too preoccupied with the glorious feeling of Kirishima's ass. “You're perfect in every aspect, Kiri-kun!” She leered, eyeing him up. “What's a guy like you still single when you could be with a babe like me…” The girl stopped her actions when she felt an ominous presence behind her, terror slowly beginning to fill her as she retracted her hand from Kirishima's delectable behind.

Slowly she turned around, and all colour left her face as she was met with a slightly shaking wall of muscle. Looking up, her eyes widened comically wide as she met seething crimson eyes. Before she had a chance to open her mouth, Bakugou beat her to it.

“STOP GROPING PEOPLE WITHOUT CONSENT YOU SHITTY PERVERTED FUCK!”

Everyone who wasn't used to Bakugou's nature jumped in fear, all huddling towards the door in case they had to run. But the class of 1-A were used to his outbursts and crude language by now. That didn't mean it stopped them from laughing at the unexpected sight.

Bakugou then proceeded to comically pick up the still frozen perpetrator and tossed her to her friends and classmates all huddled by the door. The girl landed with an oof and they all eyed Bakugou like he was the devil himself. Another vein bulged in his neck, and Kirishima gulped to prepare himself.

“GET OUT!”

The students ran for dear life, their footsteps echoing through the hall along with heavy panting and terrified squeals. With another huff, Bakugou stormed back over to his desk and sat back down roughly, folding his arms over his chest.

Kirishima followed him over to his desk and pulled up a chair next to him. All was silent until Kirishima spoke up, a gentle smile on his face. “Thanks for that, Bakubro. I dunno what I would've done, to be honest.”

Bakugou sucked his teeth and rolled his eyes. “Probably just stand there and let it happen, dipshit.” Kirishima laughed and rubbed the back of his neck. “Probably…” he trailed off.

“Besides,” Bakugou's voice broke Kirishima out of his reverie. “Just be glad I handled it.” An evil smile formed on Bakugou's lips. “Imagine if (Y/N) was the one to catch that girl.”

Kirishima visibly paled at just the mention of you catching that girl instead. There'd be nothing of her left…

Kirishima laughed nervously. “I'm glad it was you, Bakugou.” Kirishima thumped a closed fist over his chest, tears in his eyes. “It was so manly of you!”

Bakugou groaned in annoyance and wound up his leg to kick Kirishima out of his chair.
_______________________

You stopped working on whatever it was that you had on your workbench at the time and sneezed, scattering some of the screws you had in a neat pile all over your table. 'Someone must be talking about me…’

A few “bless you”'s rang out from around the classroom and you waved your thanks. Standing from your seat slowly, you raised your hands above your head and stretched, your joints cracking deliciously.

Rubbing your nose lightly, you meandered over to the front of the lab and to take a tissue to blow your nose. Just as you grabbed a tissue, a hand shot out at you and smacked your ass, sending little ripples through the flesh of your ass and down to your fluffy thighs. You jumped in surprise, a startled yelp escaping you at the sudden attack.

Whirling around, your (e/c) eyes met with amused orange ones and your blood began to boil. “Jiggly and soft as per usual, huh (Y/N)?” Usani said haughtily, eyeing you down as you shook in rage.

Kotahiko Usani has been the bane of your existence since you first stepped foot into the Support Department. The moment he laid eyes on you, he made it his personal mission to make your life a living hell, from attacking you verbally about your weight to actually physically touching you.

“First of all-” He cut you off by startling you again. This time, his hand grabbed a handful of your love handles, gripping tight enough to make you uncomfortable but not too tight to hurt you.

'What the fuck is his problem?!’ You and the rest of the class thought simultaneously. Mei watched from across the room in uncharacteristic worry. She's seen you go off before. Usani didn't seem to care about the evil glares he was receiving from the entire class. Instead, he wiggled his fingers into your flesh, making your skin crawl.

“What are you gonna do with all this extra meat, Fatty-kun? Don't you know it's not professional for a hero, even a Support one like yourself, to be overweight and so soft? It's very unbecoming.” You gripped his wrist that was grabbing on to you so tight you faintly heard a small snap and ripped it away from your body.

Usani hissed and cradled his hand to his chest, but didn't stop sneering down at you from his nose. “Awww, did I make the poor piglet mad?” Red was slowly beginning to overtake your vision. Mei decided she had enough of this.

“Why don't you just piss off, Usani? I don't think you wanna piss (Y/N)-chan off.” She called from behind him, prompting him to turn around. He scoffed at the first year, rolling his eyes. “And why is that? She doesn't belong here, heroes aren't supposed to be fat.” The class sucked in a breath of disgust at the senior.

He chuckled, not at all bothered. “All that extra meat is only good for holding on to at night.” A lecherous smile filled his lips. Usani began turning around to face you again, clearly not done saying his mind.

“Besides, what harm can a supportive marshmallow do anyway-”

Before he could finish his sentence, he paused eyes wide as he stared at you. Your (e/c) eyes were glowing blue as you snarled, right arm pulsing the same electric shade as your eyes, a pattern similar to one on a piece of a CPU suddenly appearing on your flesh, the lines trailing all the way up your arm and to your neck. Your hair was slightly floating, and absolute murder was all you emanated.

Usani and the rest of the class gulped in fear. “Hehe… um…” Usani began nervously. “Would now be a good time to say I was joking?” When you didn't answer him, he only grew more panicked.

“It was all just a joke, right guys?” He glanced to the class for help, but only grew more scared when he was met back with smug smiles. “I-it was just a joke, right (N/N)-kun? R-”

He was knocked out before he could finish his sentence, your glowing and pulsating fist connecting square to his jaw, your quirk sending data to his brain to short circuit him, rendering him to a twitching mess on the floor. Pulling your arm back, you cracked your knuckles before deactivating your quirk, smoothing your school uniform where he grabbed you and patting the side of your thigh in content.

Turning back to your class, you saw them beaming at you. You smiled sweetly back at them. “Who said being fluffy was bad?” Everyone burst into laughter and you meandered back to your workbench next to Mei who wouldn't stop rambling about all her new ideas for her babies to match with your quirk. You listened to her with a lazy smile as you rested your head against your hand.

Little did you know that a pair of Vermilion eyes had watched the whole ordeal, and a proud and smug grin revealed sharp teeth.
_______________________

Once again in the lunch line with the red headed idiot, Bakugou was no longer as agitated as he was during lunch yesterday. The group of girls who were fawning over Kirishima yesterday was the same group that belonged to the GD, including that lecherous girl who grabbed onto Kirishima. They glared at Bakugou from a distance, but thankfully kept their mouths and opinions shut.

Everything was finally somewhat peaceful, and Bakugou relaxed slightly, the tension normally in his shoulders leaving. The line crawled at a snail’s pace, but besides that, the day was golden.

That was, until a girlish scream was heard from behind him and everyone whipped their heads around to see who emitted such a noise. Bakugou could barely believe his eyes when he saw you standing over a shaking boy with black hair and orange eyes, your quirk activated and your eyes and arm glowing. You right hand was currently grabbing the boy by the front of his uniform and your left was reared back like it was ready to clock the boy dead in his face.

“For the last fucking time, Usani,” You growled out, teeth bared. “If you smack my ass one more time and say “Hey Ms.Piggy”,” Bakugou heard Kirishima suck in a sharp breath. The surrounding students began creating a circle around the two. ‘This isn’t looking too good.’
Bakugou realised.

“I will not hesitate to fry your pathetic head until you’re stuck in the infirmary for a week!” Though Usani was shaking, he still held a sneer on his face. “I’d like to see you try, fatass.”

With an animalistic snarl, your fist came down hard, but before Bakugou could move to stop you from potentially getting yourself suspended, a certain redhead beat him to it. Kirishima launched over to you two and threw his arms in between Usani’s pale face and your crackling fist, his quirk negating a majority of your power. Your blue eyes snapped to him, and he saw your eyebrows scrunch together in confusion. Kirishima smiled and moved his arms, placing his large and warm hand on your upper arm and tugging you away from Usani, who was panting heavily.

“Calm down, (Y/N). It’s not worth it.” He spoke to you gently. Finally losing your adrenaline, you sighed and deactivated your quirk, smoothing your hair back into place and fixing your uniform shirt and skirt. “Come on,” He chided you lightly. “You’re better than this.” With a guilty smile, you were about to respond to him when, yet again, Usani cut you off before you could begin.

“Y-yeah! You tell her, Riot!” Usani scrambled back up and dusted himself off, pointing a shaky finger towards you. “See, (Y/N)? This is what a real hero is supposed to look like. No fat on him anywhere.” The rage from before ignited back up, and you were about to charge after him when you felt a tight tug on your arm, keeping you in place. Kirishima shook his head, his lips set in a thin line.

Usani didn’t notice the rage building in Kirishima’s eyes. He was too busy goading the other students to see his way. “See this, guys? This is the exact thing I was talking about, and the two of them standing together is just too perfect!” Reeling back to face you guys, he jabbed a finger at Kirishima. “This, is the body of a hero. Toned, muscled, perfect.” He switched his gaze to you, a dirty smile on his lips.

“And this,” He motioned to your plump body. “Is what not to have. See her pudgy stomach, the big thighs and arms? She’s too soft! The exact opposite of our hero here. They’re incompatible.” You couldn’t see straight anymore, rage overtaking you completely. Just as you were about to rip Kirishima’s hand from you, he spun you to face him. Before you could say anything, he wrapped his arm around your back and pulled you close, locking his lips with yours.

The shock dissipated all of the rage you felt before, and you melted into it, eyes closing and hands coming up to rest against his face. A mixture of sharp gasps and awww’s echoed throughout the crowd, and Bakugou smirked, wolf whistling at the two of you. Usani could barely believe what he was seeing, shaking in his skin. When the two of you finally parted, a light blush covered your cheeks, and Kirishima winked at you.

The both of you smiled lovingly at one another before turning back to a shaking and stuttering Usani. Kirishima’s eyes settled into a hard glare, and a sadistic smile graced your lips, eyes and arms beginning to pulsate that electric blue. Bakugou joined the two of you up there to stare down the third year, small explosions going off in his hands. He eyed your floating hair with a raised eyebrow.

“Cute.”

You snorted, never taking your eyes off of Usani. “Thanks, Katsu-kun.”

A small smile graced Bakugou’s lips before settling back onto Usani, and angry scowl on his lips. “Hey, fuckface.” Usani’s eyes darted to Bakugou, fear evident in them when he realised he had three incredibly strong and incredibly pissed students locking onto him, along with the heated glare he was getting from a majority of the lunchroom.

“See these two?” Bakugou gestured to you and Kirishima. “Haven’t you ever heard of opposites attract?” You and Kirishima smiled widely at that. “Besides, even if she is chubby, it doesn’t mean she can’t be a hero. Wasn’t it her how fried your ass yesterday and left you with that bruise on your jaw?” Usani flinched and you snorted.

“She was showing your bitch ass some mercy. But,” Bakugou drawled, eyeing Kirishima who nodded at him. “As her best friend and her boyfriend’s best friend,” The crowd aww’d again and this time the couple and Bakugou blushed.

“I can’t say I’m- no, we, are gonna do the same.”

Usani whimpered as Kirishima pounded his hardened fists together, your tattoos glowed brighter, and Bakugou’s fist crackled louder. This was gonna be a good day, Bakugou had predicted it.

 

 

_____________________

 

Present Mic and Aizawa were walking through the halls towards the Teacher’s Lounge when they heard a high pitched and girlish scream come from the lunchroom. Without hesitation, they both sprinted towards the door, ready to beat down any villain that may have entered the school. But when they pushed through and saw two of their students and one familiar girl in a Support uniform chasing down a third year support who was screaming like a little girl, they deflated.

Aizawa sighed and was about to intervene when he heard Bakugou shout, “C’mere fuckface! What’s wrong? Don’t wanna call (N/n) a fatass again?” Bakugou sent a blast towards the boy and he screamed again, diving out of the way. He landed with an off right at your feet, and he blanched at the sinister smile you were giving him. You raised your right arm and lunged at him, barely missing him by the skin of his teeth.

“Aww, come on, Usani-kun!” Usani yelped as he barely dodged another one of your attacks. You were so fast and agile, it was throwing him off. “Don’t you wanna grab my ass or love handles again? After all, you did say that their only good for holding on to at night.”

A loud growl came from both of the boy’s and Usani looked like he was about to faint. He whipped his head around to try and find any help, and his frantic orange eyes landed on the figures of the two pro heroes. He pleaded them for help with his eyes, sweat running down his face.

But after hearing all that they did, Present Mic and Aizawa began retreating from the lunchroom, whistling as if they hadn’t seen a thing. A disappointed and disgusted look was sent Usani’s way from the teachers, and he swore he was gonna cry. The two closed the doors to the lunchroom behind them, ignoring the sounds of the girlish screams and the laughter from the other students.

Aizawa sighed as they got far away enough that they didn’t hear the explosions anymore. He ran a tired hand through his hair, and Present Mic shook his head.

“I don’t get paid enough for this.”

They both looked at each other in mild surprise at the unison thought proclaimed out loud. Without another word, they nodded to one another and proceeded to the Teacher’s lounge.

Notes:

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