Bakugou's Sister
Complete Self Indulgent Post for my number one guy, Eijiro Kirishima. I wrote this with an OC in mind based completely off myself so apologies in advance if you’re not into it.
I truly hope you guy enjoy this, there will definitely be a part2, maybe three depending on how smutty I get in chapter 2 ;)
Content: drinking, fluff, aged up characters
word count: 3,698
Summer has just started as you finish your junior year of college. You have spent the last year studying abroad in the United States, wanting to get away from all the hero stuff that surrounds your friends and family. As hard as it has been to be away from home the past year, you have enjoyed your time away, learning so much about yourself and your interests.
With all the time you’ve spent by yourself, today seems a little more lonely and you’ve found yourself missing home more than usual. Today is the first time in your 22 years that you’ve spent your Birthday away from your friends and family, more importantly away from your twin brother.
The FaceTime tune on your phone chimes as you hold the phone arm's length from your face.
It rings… and rings… and rings… FACETIME UNAVAILABLE your screen reads. You let out a huffed sigh, as you press the cancel button in the middle, slightly blowing some hair out of your face as you rest your cheek against your palm. “Happy birthday to you too, Kat” you say under your breath.
One of the best things about your time studying abroad is the people you have met. One family in particular you met while at a small local coffee shop. The family clearly had their hands full with two sets of twins. You couldn’t help but smile at the two youngest as the older brothers were bickering, throwing their food at each other. You walked up to the mother, sitting there alone trying to soothe her crying son. You still remember your conversation with her vividly. Sweetly offering her a hand since you know what it’s like to be a twin. You talk to her about how you and your brother were such menaces when you were little and you didn’t mind helping out, even if she was a complete stranger. Hesitant at first, the women openly accepted your offer.
You began to regularly babysit the three boys and single girl who reminded you of yourself. The two of you forming a bond quickly. Which brings you to today. Your 22nd birthday. At their lake house. All alone. She had mentioned that they’d be gone for the summer and opened it up to you to “watch over the place”. You quickly agreed, not knowing how lonely - secluded - you would really feel in this spacious house for months.
You sigh, grabbing your favorite bottle of tequila from the cabinet and walking out to the deck to sit and watch the sunset over the lake. What a beautiful night, you think to yourself. And it was, truly beautiful. The crystal clear water rippling against the horizon, water lightly crashing against the rocks at the bottom of the stairs. The dock swaying lightly. The sky painted with the perfect pink and orange colors. Blue undertones shining through as the moon slowly makes its way higher in the sky. You almost forget how sad it is to be by yourself on your birthday on a night this beautiful.
Before you know it, you wake up from a sudden vibration coming from the glass coffee table next to you. 9:47 PM. Shit, when did I fall asleep? Damn it’s cold out here.
You gather the bottle of tequila and your phone and head back inside. Locking the door behind you. Oh right, who texted me?
1 NEW NOTIFICATION. You slide open your phone, a voicemail? From Katsuki?
‘Hey sis, sorry I missed your call, been a helluva night over here. I jus-’ ‘Is that y/n? Tell her I said hi! Oh and happy birthday!’
You smile. You know that voice, none other than your brother's best friend. Eijiro Kirishima. ‘y/n if you hear me happy birthday!!’ he says excitedly, you can hear the smile in his voice. ‘Hey Bakugou, is your sister still as hot as she’s always been?’
You can’t help but laugh, none other than fucking Kaminari. ‘Oi, if you don’t shut the fuck up! Damn spark plug... Well anyway sis, we all miss you, clearly some of us more than others but we’ll see you soon. Happy Birthday.’ and the line cuts. You smile, at least your brother is having a good time. Wait… ‘we’ll see you soon’ ? You repeat out loud. What in the world does that mean?
You try calling Katsuki back but the call is forwarded. Hmm… Oh well. It’s late, I need to go to bed. You tell yourself, only to be interrupted by a loud growl coming from your stomach.
Right, dinner. You were so distracted by being alone that you hadn’t eaten much today. Guess the tequila doesn’t count either.
You head to the kitchen and cook up something quickly. A simple stir fry. One that you and your brother always used to make together. The two of you may have been twins, but you couldn’t be more different. He took after your mom in every aspect. The ash blond hair, the vermillion red eyes, the temper. And you took after your dad. Brown hair, hazel eyes; everyone loved you because of how sweet you were. Despite your differences, the two of you loved cooking together. It was always something you two could bond over. This meal makes you feel nostalgic and a little sad, wishing your brother could be right next to you, pushing you into a competition of who could cut the vegetables faster. You smile at the thought and enjoy a quiet meal to yourself.
Sitting on the couch, bowl in hand, you turn on your favorite anime. Shortly after, heading to the kitchen to clean up your mess before you head to bed. You look at the clock on the stove, 11:28 PM. You sigh as you place the last dish on the counter to dry.
BANG! BANG! BANG!
Your heart is racing. What the fuck was that…
BANG! BANG!
It’s coming from the front door.
You slowly walk over to the peephole, careful not to make any noise as you approach the door. A hand covers the hole as you look through it.
“Come on man she’s probably already asleep! Be quiet!”
“Ooooh maybe we can sneak in while she’s sleeping!” SMACK.
“Oi, what the fuck did I say Dunce Face. Lay off.”
Kiri? Denki? Katsuki? No Fucking way.
You open the door and sure as hell.
“What the hell are you guys doing here?!” you say as they all turn to meet you.
“Hey y/n! You miss me?” Denki says with a cheeky smile, eye brows bouncing on his forehead.
“Aha, not as much as you missed me Denks.” You hug the blonde, who surely does not want to let go of you.
“Thought we’d surprise you so you didn’t have to be by yourself. These two wouldn’t let me leave without them.” Katsuki says walking in to hug you, pulling Denki off in the process. “Happy birthday sis.”
“Happy birthday to you too Kat. Never thought my little brother could be so thoughtful,” you say as you reach up to ruffle his hair.
“Tch, it's three damn minutes.” he snorts.
“Yeah, so? If you were three minutes older you’d never let me live it down, so I won’t either.” You flash a sarcastic smile as he pushes past you.
“Hey Kiri,” you say. Suddenly getting all shy at the red head in front of you.
“How’s it going y/n? Happy Birthday! I uh… got you something.” He pulls out a box from behind his back. Wrapped in red wrapping paper with a silky red bow.
“Wow Kiri, you didn’t have to do that…” A soft red blush rushing across your cheeks.
“Sure I did! Well, should we go inside? You can open it later!” He says, walking in to give you a hug. Tightly wrapping his arms around your waist, taking in a deep breath, “It’s really good to see you, I hope you don’t mind us showing up unannounced.”
You smile into his shoulder, “Mmm, honestly I’ve missed having company, I don’t mind at all.”
He lets go of you and motions for you to walk in as he shuts the door behind the two of you.
“No Sero?” you ask Kiri, as you help him get his things settled into their rooms.
“Nah, he’s got some new girls he’s been hanging out with. None of us like her and he’d just complain the entire time so we left him behind.”
“Fair enough, it’s much better with the three of you, even if Denki gets on my damn nerves.”
The two of you laugh as you walk in to see Denki has already made himself at home, laying on the couch, sprawled out face down as he flips through the tv channels, probably putting something foul on. Bakugou sifts through the kitchen, pulling out the half empty bottle of tequila from the counter. Kiri sits in the chair opposite of Denki to give you time with your brother.
“You expectin’ us or were you just drinking by yourself?” he scoffs.
“My drinking habits are none of your business, thank you very much.” you snap back at him, walking over and playfully punching his shoulder.
“Birthday shot?” you ask, as he’s already pouring two shots and handing you one. The two of you ‘cheers’ and throw the alcohol back, smoothly slipping down your throat.
Denki explodes off the couch as he hears the glasses clink against the granite countertop.
“You two getting the party started without the two of us?” Denki pouts.
Kirishima rounds the corner after him as you’re wiping the drip of tequila coming from the corner of your mouth. Watching you intently as your tattooed arm swipes across your mouth. He did always love the way your tattoos complimented your body. The way the ink on your skin made you feel so confident in yourself, and so much more desirable to him.
“Couldn’t possibly be a party without you Denks, now could it?” You say, grabbing two more shot glasses from the cabinet.
“Glad you finally realized it y/n” he smiles and winks at you.
“Y’know, you say that as if you’re not about to be the first one passed out on the couch.”
“Bakugou is right, you do have a reputation to uphold” Kirishima chimes in, everyone letting out a huffed laugh.
You pour the shots and hand them out, “Shall we?” you say. Everyone picks up their drink, “Wait! Make sure you make eye contact! Don’t want 7 years of bad sex do you?”
Bakugou snorts, “Pff, yeah, ‘s if that would ever happen t’me.”
“Gross” you say.
“You said it in the first place!”
“Y/n! Look at me okay!” Denki yells from across the counter.
“Jesus christ dude.” your brother says.
Except you don’t look at Denki. Your eyes are locked on Kiri’s, right across from you. The four of you bring your shot glasses to the middle and cheers each other.
Never breaking eye contact with Kirishima. He places his shot glass back on the table, eyes still on you. You’ve always had feelings for him, and it's been obvious that he feels something too. You’ve known each other since you started high school when he and your brother became close friends. There were so many unexplored and unacknowledged feelings between the two of you. What kind of friend would he be if he put the moves on his best friend's sister. He never wanted to be anything like Denki, and that’s what he’d feel like if he ever acted upon the way he’d felt about you. Less invasive of course. The same goes for you, what kind of sister would you be falling for your twin brother's best friend. Maybe some boundaries were worth crossing. That’s what you’re thinking, and that’s the look you have across your face as you and Kiri are still looking at each other.
“Let’s play beer pong!” Denki shouts. “I want y/n as a partner!”
“Fine, but don’t make me carry the game this time dude.”
Bakugou goes to the fridge down stairs and gets a case of beer, you and Kiri set up the cups as Denki attempts to help, but he keeps knocking them over. Laughing and softly saying “Oops” everytime he does.
“Looks like you are gonna have to carry the game this time.” Kiri says, nudging your arm with his elbow, “Don’t worry, we’ll take it easy on you.”
“Awww you got a soft spot for me or something?”
Your words make him blush. He does, but he doesn’t think now is the time to admit that to you, instead he just laughs it off, “I’d feel bad knowing you got stuck with Denki as a partner, he’s practically drunk off one shot.”
“Low tolerance is a bitch, plus he’s never been able to handle tequila anyway.” you say back.
Bakugou comes back up the stairs handing you two beers and walking around to the other side of the table, filling up the cups on his and Kiri’s side.
“You two ready t’lose or what?” He says with a shit eating grin across his face.
“Game on little bro” you return with the same wicked grin.
Denki joins your side as you and Bakugou face off from across the table. Keeping eye contact the two of you both sink your first throw. Then sinking the second, and the third.
“Thank god the two of you aren’t on the same team, we’d be fucked” Denki laughs, nudging you slightly.
Making you lose focus as you shoot your fourth shot, which slowly spins out off the rim of the front cup and bounces off the table.
“Hah! Thanks Dumbass.” Your brother snorts.
“Sorry y/n…” Denki says sheepishly.
You toss the ball back to Bakugou and he hands it to Kiri. The game passes pretty fast, you don’t miss a single shot, neither does Bakugou. Kiri misses a few here and there, but you can tell he’s doing it on purpose, taking it easy on you, just like he promised. Denki however, hasn’t made a single shot. You would make him drink since he’s trolling so badly, but he’s practically already passed out under the table. You have 4 cups left, Kiri and Bakugou have two. You Sink your next two shots and it’s balls back, the game is tied. You sink your first shot and the second misses just short.
Kiri and Bakugou sink the next two shots and that’s pretty much game. You finish the last three cups and Bakugou chimes that it’s already past 2 AM. You show him one of the bedrooms he can stay in and he heads to bed. Kiri helps clean up while you throw a blanket over Denki under the table and slip a pillow under his head. “Mmn.. Love y.. y/n… so hot”. You and Kiri both snort in laughter looking at each other.
“No fucking way the little perve is dreaming about you,” he says.
“What can I say, just have all the boys comin’ after me” you say, flicking your hair over your shoulder dramatically.
Kiri forces a laugh and goes quiet. “You know I’m not serious right? No need to be so down all of a sudden Ei.”
“Oh, sorry, I didn’t mean -”
“It’s okay. I’m just giving you a hard time” you say cheerfully. Rubbing a hand up his arm to pat him on the shoulder. “I’ll finish cleaning up if you wanna get ready for bed.”
“It’s okay, I’ll stay and help.” He offers you a reassuring smile, which you return.
The two of you finish cleaning up the mess in no time. Garbage is taken out, dishes are cleaned and put away. The place looks cleaner than when everyone got here. “Come on, I wanna show you something.” You say, reaching to grab Kiri’s hand as you pull him out onto the deck.
“This has been one of my favorite things about staying here. It’s so peaceful at night. The stars shine brighter than I have ever seen before. Sometimes I just get lost out here.” you say, looking up at the dark blue sky, lit up by shining stars.
“Look! A shooting star!” Kiri points out, “Make a wish y/n.”
“You should make a wish! You saw it!”
“You’re the birthday girl, it should be yours.” He smiles at you so tenderly.
“Everything I wanted has already come true.” You look up at him, smiling. Suddenly interrupted by your body shivering.
“Oh! One sec, I’ll be right back!” He says, quickly running inside. He’s back within seconds, a baggy Red Riot sweatshirt in one hand and that small red box in the other. “Here,” he says, sticking the items out to you.
You take the sweatshirt first, slipping it over your head. Kirishima watches you closely as your tank top slowly lifts as you pull his sweatshirt over your head, the sparkle of your belly button ring reflecting in his eyes. Fuck you’re so beautiful, he wishes he could tell you. When you finally pull the rest of his sweatshirt down, the fabric engulfs your figure. “Looks great on you. Maybe even better than it does on me.” he says, “You can keep that”, he smiles.
You both sit down on one of the benches behind you. The same one you were sitting in hours ago. The same one you were wallowing in about being all alone. Right now, you’re the farthest thing from feeling alone. You feel so complete with Kirishima right by your side. “One more thing” he says, handing you the small red box.
You take it from him and gently pull on the bow. Taking it and tying it back around Kiri’s wrist. “I think it makes you look super manly” you say as you wink at him. He moves his hand closer to his face, examining the new fabric on his wrist. “Ya think so? I think I’ll keep it on then.”
You both smile. He leans further back into the bench, the cold plastic warming under his touch. He brings his right arm up behind you, relaxing it on the head of the bench.
A loud tear echoes in the emptiness around you. “A book? Of coupons?” You ask. Slowly flipping through the pages in the booklet. “This is so cool!” Good for one free boba! Good for a trip to your favorite ramen shop! Good for a day trip of your choice! Some of the pages read.
“Kiri, this is so thoughtful!” you smile at him.
“Yeah, I didn’t really know what to get you. I just figured… ya know, we hadn’t seen each other in so long... I just wanted to make sure we had enough time to catch up. Then I came up with that.”
“Well, it’s perfect and I love it.” You wrap your arms around his neck, hugging him tightly. It catches him off guard but he accepts it quickly. The hand that was around the back of the bench is now wrapped around your waist, he slowly pulls you in tighter, aimlessly rubbing shapes up and down your back. You bring one of your hands up to tangle your fingers into his hair. He hums at the sensation and gets lost in the smell of you. Your coconut shampoo is sweetly intoxicating. He can’t get enough of it. And he doesn’t want to let go of you.
You slowly start to let go of him and you can feel his shoulders drop with disappointment. “Sorry, that position was hurting my back.”
“Get comfy then, it’s okay.” he reassures you. You smile as you nuzzle into him, tucking your shoulder right under his armpit, head resting lightly on his chest. He wraps his arm around you again. Starting at your waist then resting on your hip. You take in a deep breath and relax under the weight of his arm. Best birthday ever, you think to yourself. Before you know it, you’re slowly drifting off to sleep. Your body slipping down into the bench. head now resting in Kirishima's lap. Your knees tucked into your chest, feet hanging slightly off the bench. Kiri’s right arm still rests on your hip, his left brushing your hair out of your face. Rubbing your forehead and cheek as he does so.
Your skin is so soft under his rough battered hands. You look so sweet like this. So tiny curled up next to him. Tucked into his lap. Wearing his sweatshirt. He wishes he could have you like this every night. Cuddled up next to him. Asleep peacefully under his touch. You start to stir in your sleep but he’s quick to hush and coo you back to sleep. He could stay out here with you all night if he could, but the cold is quickly getting to him. He slowly starts to pick you up, pressing you into his chest as gets up to carry you to bed.
Slowly entering your room, he holds you up with one hand as he pulls your sheets back. Setting you down onto the bed and pulling your slippers off your feet. He pulls the covers up and tucks you in. Sitting there for a few moments longer, completely admiring you. He puts a hand back up to your face, rubbing a small circle on your cheek, softly dragging his finger across your bottom lip. He wonders what they would feel like pressed against his. He would give anything to find out. “It’s always been you, y/n.” He whispers. Hand still on your face, he leans in to place a kiss on your forehead.
Your eyes start to flutter open quickly, then close again, “Eiji?” Oh shit. Did she hear me? He thinks to himself. “Hmm?” he says nervously. “Thanks for being the best birthday present ever.” you say with your eyes closed. Drifting soundly back to sleep. Kirishima takes a deep breath of relief. He smiles into another kiss, this one on your cheek. “Goodnight y/n.” He says as he walks out, heading to his own room to go to sleep.
