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cashmoneyyysstuff · 7 days

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in which : you and your classmates surprise katsuki for his birthday !

day seven of the explosive birthday collab event hosted by @queenpiranhadon !

fem reader, i dog on kaminari a lot in this one lmfao sorry kami fans i promise i luv him, kissing, lotsaaaa fluff, mentions of food, mentions of drinking but its not specified to be alcohol or anything ! cuddling, teary eyed sentimental katsu, soft katsu for the soul, teary eyed reader, class A bein silly, lmk if i missed sum else !

a/n : HAPPY BIRTHDAY KATSUKI KATSUKI DAY GRAAAAAHHH-

and so, finally bakugou’s big 18th birthday party had arrived.

and you could absolutely not be more nervous.

you’d barely slept a wink, too giddy but also terrified as you kept on thinking about everything that could happen that you lost track of time. you'd checked and rechecked to see if the gifts you'd prepared where ready, checked with your classmates to see if all the decorations in gym gamma where still okay and checked the fridge five times to see if it was still intact aka if kaminari or mineta hadn't gotten their grubby little hands on it. tokoyami had told you not to “let the chains of anxiety shackle thy restless soul”, which you think meant you didn’t need worry yourself too much. you didn't quite get it at the time but you were thankful nonetheless.

you’re in bed now. nervous, sure. but you can’t help excitedly kicking your feet nonetheless. you were so excited to see katsuki’s reaction to the surprise and to your gifts, of course.

you check your notifications one last time, smile at your homescreen picture of you and your boyfriend, and turn on your side to finally go to sleep.

the day goes by with no hiccups. despite your friends wishing katsuki a happy birthday, with him grumbling in a sort of appreciation, he didn’t seem like he’d caught on. and he hadn’t noticed the sneaky mischievous glances you sent your friends every once in a while, everything was going off with a hitch.

you’d, of course, waken up extra early to be sure you were the very first person to send him a happy birthday message, getting ready at lightning speed to greet him at the door with a warm hug and plenty of kisses. which he reciprocated after quickly getting over his stupor.

the day had gone well, but now it was time for the surprise. and while you gather up the last finishing touches and finish bringing the food, operation : extrate the payload was a go.

kirishima had been tasked to go retrieve katsuki and drag him over to the gym, claiming he wanted to try a brand new move and knowing katsuki you knew there was little to no chance he’d pass up training. but just in case, you’d encouraged kirishima to egg your boyfriend on a bit, that usually gets him going and you smirk proudly at your phone when you get a text from the red head himself.

“he took the bait ! the payload is on the way >:)”

and there you have it.

“alright guys, payload’s on the way !” you exclaim. your classmates start taking action, there aren’t many places to hide in the gym even with all of the changes you’d all made, but everyone had managed to find a pretty good hiding spot. some, like kaminari following others because they had nowhere else to hide and exchanging whispered complaints of “why’d you follow me ?!” and “ow, don’t step on my feet !” you giggle at how much your friends treat this like a game of hide and seek rather than a big surprise, before bounding away to find a hiding spot for yourself near the entrance.

it's so quiet you can hear a pin drop. denki clear his throat and yelps immediately afterwards, you assume someone must’ve punished him for the noise and you almost snort. until you hear voices approaching.

you recognize the loudest one clear as day. your heart starts racing when you hear the door open and kirishima and katsuki sounding impossibly close. katsuki’s complaining, as usual and it should be about time for—

“let’s hurry this up shitty hair, got other shit to do later.” you hear your boyfriend grumble.

“yeah, yeah i got it man.” kirishima replies “i’ve been working on this move for a looong while, so i think you’ll definitely be in for a treat.”

the trigger word.

“why’d you put so much emphasis on the—“

“SURPRIIIIISEEEE!!!”

bakugou’s next words get caught in his throat and he makes a little spluttering noise when all of his classmates pop out from almost every single crevice, nook and cranny in the room. his eyes are wide as saucers and his stance screams he’s on high alert, ready to fight, only to be met with his entire class screaming at him.

he stays frozen in his spot, eyebrows twitching and you all silently wait for him to react until denki shouts “kacchan’s shut down, guys !” in an instant time restarts its course and while you all burst out laughing katsuki splutters again.

“shut the fuck up dunce face !!” he shouts, but it doesn’t hit the same as it usually would, he’s just a bit quieter “w-what the hell is all this ?!”

“obviously it’s a surprise party.” sero sasses with a smirk, mina rubs it in by adding a snarky “duuuh !”

kirishima takes pity on his friend and places a hand on his shoulder comfortingly "we knew your birthday was comin' up, so we wanted to throw you a birthday party !"

"and actually keep it a secret this time.." kaminari snickered not so quietly. him, and the majority of the class side eyeing todoroki and mineta, the smaller boy immediately spluttering out excuses while the other only tilted his head in question.

katsuki's flabbergasted expression has settled just the smallest bit, his eyes shoot over to you and you offer him a sweet smile "18th birthday's are special, y'know ? they should be celebrated with class." you joke. the redhead next to your boyfriend nods aggressively fast. you feel a hand on your shoulder and turn to see kaminari again. you snort when he opens his mouth to speak again—does that guy ever stop talking ?

"i helped plan everything." he smirks, leaning against your shoulder and nodding proudly. only to wince when jirou materializes behind him, accompanied with a fist to his head. "we all did, idiot."

"hey, don't go taking all the glory for yourself !" mina chimes in a little further in the crowd, shoji places a hand on her shoulder in support.

you can't stop your lips from forming into a silly smile at your friends antics, and you giggle when katsuki only rolls his eyes, trying to hold back one of his own.

"you guys are idiots..complete fuckin' morons.." he mutters under his breath, shaking his head and rubbing at his nape almost shyly. he looks up at the red head next to him, then at the rest of his class with the faintest of pink on his cheeks, hand still pressed awkwardly on his nape like he doesn't know where to put it.

"i-i appreciate you guys..or whatever..thanks."

a beat passes. and then squeals resonates throughout the room.

"AAAWWWW—" kaminari and mina both squeal.

"aww man, you're blushing !" kirishima laughs, his cheeks also tinted pink.

"S-SHUT THE FUCK UP. NO I'M NOT—yer seein' things, you fuckin' weirdo.." katsuki spits, but his embarrassment and appreciation refrains him from insulting his smiling friend too agressively.

"aaand he's back.." sero quips, causing absolute choas filled with laughs and screams..the screams coming more from your boyfriend but you digress.

you're all smiles, this couldn't have gone any better for you and you feel a little silly for feeling emotional. katsuki's absolutely not the first person others would call sweet, but him actually putting in the effort and putting his feelings into words make your heart grow more than three sizes.

"alright, enough with the mushy stuff. let's party an' eat cake !" kaminari, always being the life of the party, exclaims. you're thankful that he's so aware and always able to set everything back on course so naturally, you almost envy him for it. you and your classmates excitedly cheer. between the cheers you lock eyes with katsuki, who was already looking at you. you smile at him brightly because you really can't help it and you feel your heart beat and dance around in your chest when he offers you a handsome smile in return. not his usual boastful one, the one only reserved for you. the one that makes your heart beat intensely, but more sweetly and makes it melt like liquid honey.

this is the best.

you're a few hours ( and a lot of slices of cake) later into the evening, when you lean against the wall to take a breather. you're cheeks hurt with how hard you've been laughing and you sigh happily, the noise being drowned out by the loud speakers booming as you take a sip of your favorite drink.

"yo." you turn to see sero right next to you, "hey !" you chirp loudly, trying to get him to hear you over the music. he smiles easily at you, taking a sip from his drink before he continues

"looks like blasty's havin' fun." he chuckled, pointing his cup to where your boyfriend had been dragged into an impromptu conga line. you burst out laughing, pulling out your phone to record. and while you're recording he notices and glares right at you, you offer him a taunting little wave and cheer him on. and his narrowed eyes need no words as his hands tighten on deku's shoulders in front of him. the green haired boy's eyes widen in surprise as his mouth open in surprise.

"you're gonna pay for that." you chortle.

"looks like this party was a succes, huh ?" sero utters softly, going to take another sip before leaning his red cup over to you. you laugh with a shake of your head.

"yep !" you agree, knocking your cup against his.

a warm hand wraps around your wrist. you don't know if you ever stopped smiling since the beginning of the evening, but you smile wider when his warmth practically engulfes you, his chest pressed to your back as he pulls you against it. you look up at him to see him trying to supress a smile, not well, but he's trying. "finally caught you." katsuki growls.

"you havin' fun ?" you sing. he scoffs "bein' dragged around playing limbo with those fuckin' cheaters ? yeah, plenty." the words come out bitterly at the memory of kaminari 'setting him up' during your game of limbo, competitive as always. you laugh at his sarcastic remark.

"i think you looked real handsome during the conga line," you sigh sweetly to sell the act, "so dreamy.." his words get caught in his throat and he pokes at your stomach in punishment to make you squirm around, then he's reaching to grab your hips shuffles around in your pockets while you try to keep him away. "i saw you recording me, freak ! gimme the phone."

"no !"

"give it !"

"leave me be, it's a m-momento for your 18th birthday !" you wheeze, giggling and shrieking as he takes his chance to tickle you. you hear him chuckle into your ear and he finally relents. "m'getting to that phone while you're asleep." you fake gasp in shock, wrapping your arms around yourself.

"you wouldn't !"

"don't test me." he snarks, throwing you a teasing grin. however, his expression morphs into a soft one, he shoves his hands into his black baggy jean pockets.

"heard you planned all this, huh ?" your eyes widen.

"no, no we all did."

"but it was your idea." he insists, and cuts you off before you can continue "don't bother, kirishima already told me." as thankful as you were for his help, you cursed kirishima in your head for throwing you to the explosive wolf like this. it's not like you were angry, but you really couldn't have done all of this on your own and it was definitely a team effort.

"well, i mean..yeah.." you admitted shyly, fumbling around with your hands. it's silent, then he chuckles at your humbleness and you're slowly, agonizingly slow at that, being backed up against the nearest wall. and his forehead maes contact with yours, you're tucked away into a corner of the gym where the rest can't see you, he places his arms against the wall next to your head.

your eyes dart from his to the floor "i just thought..it could be fun, you know..? m'sorry for lying to you about the bookstore.." you spilled, trying your best to stutter out an apology, until he stops you, raising your head up with his finger.

"you're really somethin' else, you know that ?" he smirks softly " i knew you were planning somethin', you were being too secretive. hanging out with my mom and shit, sneaky brat."

"i like hanging out with your mom !" you defending the older woman has your boyfriend roll his eyes "should like hanging out with your boyfriend first." he quips. you roll your eyes as well, but it doesn't take you long to burst into a fit of laughter and he follows quickly. your chest feels warm, tucked away giggling in this small corner of the bustling party, just you and katsuki.

"i have something i wanna show you." katsuki raises a brow at your sudden words. "oh, yeah ?" you nod. "but it's in my room." you offer him your hand shyly, and he smiles softly, huffing through his nose. grabbing your hand as you pull him out of the gym and walking silently into the night back towards the dorms.

"hey.." katsuki starts, you hum. "uhm, y'know—fuck.." he fumbles with his words and pulls you along when you stop walking to listen to him, wanting to continue so you wouldn't notice his embarrassed state too hard.

"thanks for this." your eyes widen and it's like he sensed you were about to speak because he interrupts you "yeah, yeah i know you all did." he mimicks your words, squeezing your hand in his warm one "but you thought it all up, so..thanks." he glances down at you " when i said i appreciated it, i really did. i really do."

your heart thump, thump, thumps against your chest, you feel it hammer in your ear. your hand squeezes his and he squeezes a second time. you don't know what you can say, so you smile at him. it's late at night and tiredness has finally started kicking in now that the music fades further and further away, but you're so, so happy and you think he can see it too. his smile slightly dimmer but still there and it makes you feel so warm and loved despite the slight chill of the outside. you wish you could see him smiling like this all the time with all your heart. and you hope he'll like your gifts and all of a sudden your at the entrance of the dorms. you make your way to your room in comfortable silence. your hand getting slightly clammy in his when you finally reach your floor and make your way to your room.

"what did you wanna show me ?" bakugou asks, closing your door behind you. you sit down on your bed and pat the spot next to you. he questions it with a raise of his brow, but doesn't any further and sits down next to you. you inhale, and reach underneath your bed to grab the gift and hand it over to him. his eyes widen, he narrows his eyes at you when your lips curl into a bashful smile.

"yn."

"i know.."

"i told you not to get me anything, stupid." he utters breathlessly, placing his hand onto your head and noogieing you. you reach up to stop him with a whine.

"i knooow !" you moaned "but just open it, please ?" you give him your best puppy eyes. he scoffs but finally relents. grabbing the thin box from your hands. he shakes it softly and you make a noise, reaching for his wrists.

"katsuki !" you giggle "don't shake it !"

"m'just trynna hear what it is."

"then open it !"

finally, he opens his the box. his eyes widen and he places it down on the bed to get a better look at the book you'd made for him. you perk up nervously when he inspects it thoroughly, running his fingers over the stickers you'd stuck to the front.

"i-it's a recipe book, see ? i know you love to cook so i figured you could add all of your favorite recipes in it." he flips the book open while you explain away, skimming over the pages " you can detach the rings too, so if you wanna add pages you can—"

before you know it you're interrupted and practically slammed onto your bed, a pair of warm bulky arms incasing you into your boyfriends chest. you shriek, but it melts into a giggle when he kisses all around your cheeks and nose softly, causing a ticklish sensation and when he lands a particularly wet kiss against your eyelid you laugh.

after moving his recipe booklet to your nightstand to keep it intact, he places you further onto your bed to kiss you again, obnoxiously loud at that, and you try to kiss back to the best of your ability but constantly huffing through your nose and smiling. he leans up to give you a break from his love attack, only for you to be hit dead on with all the love in his eyes.

"i'm gonna assume you're happy with your gift.. ?" he rolls his eyes at your joke, nudging his nose with yours.

"yeah, happy doesn't even begin to cut it. thanks, babe." he simpers, his eyes are bright and you make sure to commit his expression to memory. he leans down again, promptly kissing you deeply, you let yourself get carried away by his love and affection, kissing him back passionately but you remember your last gift for him.

"mm, there's—" he hums, continuing his flurry of kisses "there's something taped—" one more kiss cuts you off "—on the last page of your book, suki." one last loud peck and he pulls away to stare at you incredulously, you never stop surprising him, do you ?

he quickly retrieves it from your nightstand, and if his eyes widened before they practically bulge out of their sockets at the little holographic card neatly taped in his book. he carefully removes the tape and lifts up the card, looks at you, and looks back at the card in shock causing you to giggle.

"i remember how bummed you were after your card got all messed up during the war, so..." you're heart squeezes at the horrific memories of what had happened those few years ago, and how upset your katsuki had been when the card he'd kept close to his heart since he was a kid ended up crumpled up and bloody. he still has it, hidden in a box under his bed, but he never got to bring it to all might to get it signed. so you decided to do it for him and after racing neighborhood kids to get as many packets as you could get your hands on and a few packet of cards, you'd finally pulled it. you knew what you needed to do and the bewildered look in his eye was most definitely worth it.

"holy fuck..holy shit." he insists "how did you even—i—what ??" you burst out laughing at his disbelief, he could be so cute when he wanted to be.

"i just asked mr. all might if he wanted to, and he happily agreed, by the way." you answer simply with a shrug. however your smile fades just a bit when his eyes turn glossy.

"hey.." you crooned. quickly he shoves his head into his shoulder, furiously wiping at his eyes. he sniffles and grabs your wrist. you think he's about to pull you towards him only for him to crash against your chest again. you let out a 'oof !' sound, chuckling breathlessly. you don't say a word as you feel his arms wrap around you tighter, his face and hands heating up against you and the collar of your shirt growing wet. you don't mind, running your fingers through his hair until he's ready to speak again.

"yer gonna be the end of me, woman." his voice is just a little scratchy and he clears his throat, you giggle.

"this..i know i'm not the best at all this emotional stuff but—m'real thankful y'know.." he rambles against your neck, you nod "mhm." you urge.

"a-an' this is honestly more than i could ever ask for. ever." he looks up just enough to make sure you see his slightly red eyes "this is the best gift ever given to me. you're the best gift ever given to me, and i dunno what i did to deserve you, but i'm definitely not taken it for granted" he half jokes. you feel your whole body heat up and your eyes burn just a bit at the sincerety of his words.

"i love you, katsu. s'the least i can do." you sniffle. he leans up to kiss you almost immediately. it's soft and sweet and so perfect. it's just passionate and slow enough where you can practically feel the love he's trying to give to you, you know what he's trying to tell you without him even having to speak, because you love him and he loves you.

"i love you." he responds against your lips, you love him and he loves you, and you kiss him again. you hope he can feel how much you love him and how happy you are he enjoyed himself at his surprise birthday party. you hope you can keep seeing him smile like he did tonight and enjoy himself and his cake every year. you hope you can try every single recipe he adds to his recipe book and see the way his eyes light up at his signed holographic all might card every single year.

bakugou pulls away to look at you with all the love in the world and he thinks that any birthday he has in the future will be more than perfect if he can have you by his side for as long as he lives, every year.

aaaand it's done !! tysm to @queenpiranhadon for allowing me to participate in this event, and the last day no less ! such an honor ! i advise you go read my other collab partners chaps to get the context for this one, so please go read their parts as well, cus theyre all so good and so adorable, i had sm fun writing this and i hope yall enjoy <3 happy birthday katsuki !!

taglist *if your name is pink i unfortunately couldn't tag you :(* : @gina239 @mystic60 @meowze4r @icedemon1314 @bigsimpo343 @ah-mya @wheezdostuff @berryvioo @seonne @slayfics @food8me @katsuisbaby @azzo0 @kieran-rhoades @xnorthstar3x @le000xxgrd @tr-mha-fan

day one: you make a birthday gift for katsuki ! - @zanarkandskylines

day two: you invite all of class 1-A to the party ! - @xbabyd0lli3x

day three: you and mitsuki go shopping for decorations ! - @angels-fantasy

day four: katsuki tries to figure out what you’re planning ! - @starieq

day five: you set up gym gamma for the party ! - @lowkeyremi

day six: you bake a cake for the party ! - @queenpiranhadon

day seven: you and your classmates surpise katsuki ! -@cashmoneyyysstuff