Kirishima Ejirou X Reader - Blog Posts

“Red Riot, Meet Your Sidekick”

The late evening air was cool, but sweat beaded on your forehead as another sharp contraction hit, making you grip the passenger seat armrest with a strangled cry.

“Almost there, babe!” Kirishima said, knuckles white on the steering wheel as he sped toward the hospital. “Just keep breathing! Like we practiced, right?”

You glared at him through gritted teeth. “I am breathing, Eijirou—do you want to try doing it while your insides are trying to rip you in half?”

He winced. “Right. Sorry. Focus mode. Hero mode. Got it.”

By the time the car skidded into the emergency parking, you were already moaning through another wave. Kirishima darted out, yelling for help, and within seconds, hospital staff had you in a wheelchair and racing down the hallway.

Once you were in the delivery room, everything felt like a blur. The fluorescent lights were too bright, the hospital gown too cold, and the contractions—insanely close together.

“I feel pressure,” you gasped, clutching Kirishima’s hand. “Like...a lot of pressure.”

He blinked. “Already? That was, what, fifteen minutes since the last check?”

“I’m serious. Something’s happening. This kid isn’t waiting.”

A nurse leaned in, lifting the blanket. Her eyes widened, and she barked over her shoulder, “We need a doctor in here, now. She's crowning!”

“Wait, what?!” Kirishima looked like he’d just taken a hit to the chest. “She’s—already?!”

The nurse met your eyes. “You’re doing great, honey, but this baby’s coming fast. Can you try pushing?”

“Are you kidding?” you panted. “I feel like my soul is about to exit my body.”

“You’ve got this, babe!” Kirishima said, brushing your hair back. “You’ve done harder things. You’re the strongest person I know.”

You barely heard him. Your body was already taking over, legs trembling as another contraction surged through you. You pushed with a cry, and suddenly the room filled with urgent voices, beeping machines, and the grounding grip of your husband’s hand.

“Again!” the nurse urged. “One more time!”

With a scream and a flood of emotion, you pushed—then just like that, it was over.

A piercing cry filled the room.

Your chest heaved, eyes wide with shock and awe. A tiny, wet, pink baby was lifted into the air.

“It’s a boy!” someone called.

Kirishima’s jaw dropped as the nurse placed the baby gently on your chest. He was flushed red, squirming, and absolutely perfect.

Kirishima let out a laugh that was half-sob, half-shock. “Babe… You just— we just—holy hell.”

You looked down at the baby, eyes blurry with tears. “That was so fast.”

“Fast?” Kirishima grinned, eyes glassy. “You just beat me in a race. That was Red Riot levels of fast!”

Despite the exhaustion, you chuckled softly. “Guess he wanted to make a dramatic entrance.”

Kirishima leaned in, kissing your temple. “He’s got your timing. And your strength. You were amazing.”

You closed your eyes for a moment, soaking it all in—the warmth of your baby, the comfort of Eijirou beside you, the soft hum of nurses tidying the room.

“I think he’s gonna be a little hero,” you whispered, “just like his dad.”

Kirishima swallowed hard. “Nah. He’s gonna be a hero like his mom.”

You held your tiny son closer, smiling through tears, your heart full.

Explosive Love: Final Chapter – The Fartening: UA Edition

Pairing: Kirishima x Fem!Reader

Featuring: Class 1-A Babysitting Chaos

Genre: Pure Crack, Full Ensemble, Epic Finale

Summary: In a desperate bid to prove they’re “hero-ready,” Class 1-A volunteers to babysit together. Team effort, they said. It’ll be fine, they said. But nothing—nothing—could prepare them for one baby and her Quirk: Mass Gas Destruction.

---

“You guys SURE about this?” Kirishima asked, holding your baby like she was the final boss.

The entire 1-A squad stood in formation—matching shirts, notebooks, snacks, and Mina with a whiteboard battle plan.

“This baby’s just a baby,” said Denki, already sweating but smiling. “We’ve survived finals!”

“She’s literally two feet tall,” Mineta scoffed. “What’s the worst she can—”

PFFFFFT.

The baby made direct eye contact with him as it echoed.

Everyone froze.

Bakugo walked by the door, still emotionally scarred. “Don’t say I didn’t warn you,” he muttered. “Little demon’s got a Quirk worse than mine.”

---

Phase 1: Attempt Diplomacy

Iida read a book aloud. Momo sang softly. Tokoyami played ominous jazz on a toy piano.

The baby?

She waited.

Ochaco: “She’s so quiet…”

Tsuyu: “Too quiet.”

PHBRRRRRT.

Half the team hit the deck.

“WE'RE UNDER ATTACK!” Kaminari screamed.

---

Phase 2: Divide and Conquer

Jirou and Ojiro tried calming her with lullabies.

Kirishima and Mina tag-teamed diaper duty.

Sero built a fart-proof barrier with tape.

The baby? She broke through it.

“HOW DID SHE BREACH THE TAPE LINE?!” Sero yelled, diving for cover.

“THIS ISN’T TAPE-RESISTANT GAS!” yelled Yaoyorozu, sketching a hazmat blueprint midair.

---

Phase 3: Full Meltdown

A fart rolled across the room like thunder.

Ashido screamed, “EVACUATE THE FLOOR!”

Todoroki used ice walls. She melted them with a warm, low pbbbt.

Bakugo peeked in again. “Still think this was a good idea?”

“LEAVE,” screamed Denki, wrapped in a baby blanket and crying.

“I can’t feel my legs,” muttered Mineta from under the couch.

“I think she farted my Quirk offline,” Deku whispered, stunned.

---

Final Phase: Acceptance

Aizawa arrived to find the class scattered like a lost battle scene.

The baby sat in the center, giggling and reaching for her pacifier, a picture of peace after the storm.

“I see she won,” he said.

“She always wins,” Kirishima groaned, gently scooping her up.

“She’s gonna be a future Number One,” Todoroki murmured, still clutching a Febreze can like a sword.

The baby looked around.

Smiled.

And let out one final, echoing toot.

---

Epilogue:

She grew up to be a kind, strong, powerful young girl.

…Her Quirk? "Pressure Release" – a combustion-based gas emission with trajectory control.

Pro Hero Name: Windbreaker.

Bakugo never recovered.

Kirishima was proud.

You? You carried Febreze in your hero utility belt—forever.

The End.

---

Explosive Love: Part 4 – Mina’s Turn (And She’s Ready for War)

Pairing: Kirishima x Fem!Reader

Featuring: Babysitter Mina Ashido

Genre: Crack fluff, Chaos, Girl Power vs Baby Gas Power

Summary: After hearing the legends of Baby Boom, Mina insists on babysitting. Confident. Fearless. Fabulous. She walks in like it’s a spa day. But this baby has no mercy—and Mina’s about to find out that cute pink hair doesn’t protect you from napalm-level toots.

---

“Guys, please,” Mina waved her hand dramatically as she slid her sunglasses down. “How bad could one tiny baby be?”

Kirishima and you just stared at her.

“Bakugo almost cried,” you offered gently.

“Deku said his lungs aged five years,” Kirishima added.

“Todoroki won't make eye contact with any infants anymore,” you finished.

Mina grinned. “So she’s a little spicy. I’m spicy. We’ll vibe.”

You handed the baby over. She cooed. Mina winked.

"Girls stick together," Mina said proudly.

From the hallway, Kirishima whispered to you, “We should start a timer.”

---

T+10 Minutes:

Mina was dancing in the living room, holding the baby like she was in a music video.

“We’re thriving, girl!” she sang. “Look at you! A queen! A tiny, powerful queen—”

PFFFFFFFFT.

She froze. The baby grinned.

“Okay,” Mina said slowly. “That was... assertive.”

She sniffed.

“Oh no.”

---

T+18 Minutes:

Mina had relocated to the balcony.

“I’m not saying I’m scared,” she said aloud, talking to the baby like a roommate. “But I did just Febreze your diaper like six times. And you’re still going.”

The baby tooted again. Long. Proud. Musical.

Mina blinked. “That one had a melody.”

She pulled out her phone. “Group chat. Emergency. I’m being farted alive.”

---

T+30 Minutes:

Kirishima peeked through the window.

Mina was standing in the middle of the living room like a war general, armed with lavender incense, baby wipes, and a fan in each hand. The baby sat smugly in a bouncer, thumping her legs like a war drum.

You sipped your drink calmly. “She’s gone full tactical.”

Kirishima whistled. “I’ve never seen Mina sweat before.”

PHHHBBT.

Inside, Mina yelled, “I DON’T DESERVE THIS!”

---

T+50 Minutes:

When you returned, the scene was… dramatic.

Mina was lying flat on the couch, a cold washcloth over her forehead.

“She won,” she mumbled. “I tried… I really tried.”

The baby was sound asleep in her arms, looking peaceful—like she hadn’t just gas-bombed a fully trained pro hero.

Kirishima picked her up and sniffed cautiously. “She’s… calm now?”

Mina sat up slowly. “She was never mad. That’s the worst part. She enjoyed it.”

You patted her shoulder. “She respects you now.”

Mina exhaled. “Good. She can remember that next time, when I show up in hazmat pink.”

---

Next time: Sero and Denki want to babysit together.

Explosive Love: Part 2 – Babysitter Bakugo

Pairing: Kirishima x Fem!Reader

Featuring: Reluctant Babysitter Bakugo

Genre: Comedy, Fluff, Chaos

Summary: Kirishima finally convinces Bakugo to babysit for just one hour. It goes exactly how you'd expect—except worse. Because the baby still has her secret weapon: farts. And Bakugo? He's not ready.

---

“I swear, it’ll only be an hour,” Kirishima said, practically bouncing with excitement as you both stood by the door.

Bakugo stood in the living room, arms crossed, expression thunderous. “Why the hell am I even here?”

“You owe me!” Kirishima grinned, already tossing him the diaper bag. “Remember that time I took a lightning bolt for you during that joint training exercise?”

“That was three years ago!”

“And I still have the scar.”

You tried not to laugh as you slipped your shoes on. “Don’t worry, she’s napping. Easiest babysitting gig ever.”

Bakugo narrowed his eyes at you. “You’re lying.”

You and Kirishima bolted before he could say anything else.

---

Exactly three minutes later…

PFFFFFFFFTTT

Bakugo stared in horror at the tiny being in front of him.

“What the hell was that.”

The baby gurgled innocently from her blanket on the floor. Her eyes locked onto Bakugo’s, gleaming with the chaos of a true menace.

PFFT-BRRRRT.

“…OH HELL NO.”

Bakugo shot up, backing away like she’d just thrown a grenade. “Why does she sound like a damn motorboat?!”

The baby let out a victorious squeal, rolling slightly. The air grew thick with danger.

“I swear to—KIRISHIMA, YOU SET ME UP!”

He pinched his nose and tiptoed over with a blanket held like a shield. “Okay, okay. You got your joke. Ha ha. Very funny. Diaper change time.”

He opened the diaper.

“Oh my god.”

---

Thirty minutes in…

Bakugo was pacing the room, the baby on his hip, burping.

“Come on, I fight villains who can control freakin’ fire. I blow stuff up for a living. I’m not scared of a little—”

PFFFT.

“…I am terrified.”

He glared at her. “What the hell are you eating? Lava?!”

She giggled and patted his cheek sweetly. Then promptly let another one rip.

---

One hour later…

Kirishima opened the door and found Bakugo standing in the hallway, shirtless, holding your baby at arm’s length like a contaminated bomb.

“She farted on my neck,” Bakugo said quietly. “I can still feel it.”

Kirishima blinked. “Where’s your shirt?”

“She won. That’s where it is.”

You took the baby from him, laughing as she snuggled into your shoulder.

“She’s a menace,” Bakugo muttered, turning to leave. “And I’m never stepping foot in this house again.”

Kirishima grinned. “See ya next week, bro. Same time?”

Bakugo didn’t answer. He just kept walking.

PFFFT.

Your daughter let out one final farewell.

Bakugo didn’t even turn around. “Tell her to keep that war crime to herself next time.”

---

Explosive Love (Literally)

Pairing: Eijiro Kirishima x Fem!Reader

Genre: Fluff, Comedy, Domestic

Summary: Kirishima thought being a dad would be all hero work and cuddles. He wasn’t prepared for your baby’s fiery talent… and it’s directed at him. Constantly.

---

You weren’t sure how something so small could be so dangerously gassy.

Seriously. It was almost impressive.

"She’s like a tiny grenade," you said, watching from the kitchen as your husband Kirishima sat cross-legged on the nursery floor, cradling your giggly five-month-old daughter.

"A grenade that only targets me," he groaned, face twisted between adoration and mild horror.

Pfffft.

Another one. Right on his thigh.

Kirishima paused mid-coo, lips parting. “That’s the fourth one in ten minutes. I counted.”

You tried not to laugh. “Maybe she’s marking her territory?”

He gave you a look. “So I’m the chosen one?”

Pfffft.

“Yup. Chosen again.”

The baby squealed with delight as if she knew what she was doing. Her chubby legs kicked against his chest, and Kirishima caught her, smiling through the torture.

“She’s got your quirk,” you teased, folding a tiny pink onesie. “Only hers is less… hardening and more—”

“Exploding,” he finished flatly. “Her quirk is butt bombs.”

You stifled a laugh behind your hand.

Kirishima held the baby up in the air like Simba, her diaper dangerously close to his face. “Why do you do this to me, princess? I’m your dad! I’m supposed to be your hero, not your toilet paper!”

Pfffffbbbbt.

“NOOO!”

You had to sit down you were laughing so hard.

He lowered her slowly. “You know, when I imagined fatherhood, I pictured late-night feedings, lullabies, maybe the occasional diaper mishap. I did not expect my daughter to weaponize flatulence.”

You finally caught your breath and walked over, leaning down to kiss his forehead. “You’re still her hero.”

Kirishima grinned up at you, defeated. “Yeah… even if she’s the real explosive one in the family.”

The baby gave one final toot, this time small but powerful enough to make him flinch.

"…I think I’m gonna need backup."

---

Mha characters as dads 💥🪨⚡️

Genre: fluff

AGED UP AU!

(I didn't write so much bc i didn't have ideas and I was tired XD)

Denki Kaminari:⚡️

-Actually fainted when you told him the news, you had to stop him from short-circuiting three times.

-Will do his best to make you laugh during your hard times into your pregnancy and will not tolerate to see you sad.

-will talk to your belly whenever he gets the chance, you sometimes wake up to him talking to your stomach

-when you have morning sickness he will sprint out of the bed and into the bathroom to comfort you.

-He loves to make cute little nicknames for you, himself, and the unborn baby, he will call you his sea and calls himself men (yall get it? lmao) and calls the baby the result.

-You both agreed on having a water birth at home bc that was how your mom had you (in this au)

-When yall went to a doctors appointment he was really excited to know the gender, but later yall found out you was having twins. You swear you've never seen him smile so much since you got married.

-The day your water broke he was a pacing akward mess, he checked up on you every 5 second and made sure you were okay.

-You leggit almost put a curse on that poor boy when you were nearing 10 centimeters, even if denki was a hero and he'd fight dangerous villains and that stuff you'd never seen him so scared before (XD)

-When it came to pushing he held your hand the hardest he could, he promised you could squeeze his hand as hard you could. But only in a few minute's he was a whining mess about how you were breaking his bones

-When you two heard the twins cry for the first time he was a laughing mess while you were a crying mess, you got two sons.

-the firstborn son was named hiro and the other one was named mio, denki was the first one to hold them (Bc he had your permission ofc)

-Even tho he was awfully in love with his sons and would offer everything for them, they bit. And not even a little, it was like they were born as a wild animal.

-But even if the babies bit, shat, hit each other, cried at night keeping yall up the whole night and cried nonstop.

-He still loved them.

Kirishima Ejirou:🪨

-100% cried when you told him the news, he called everyone he knew and told them the amazing news.

-Always has his hand on your belly, even when it was flat.

-He will always lay in bed with you and blabber about everything he wants to happen (for example, having a girl, the baby being healthy, etc)

-When you had the baby it was the happiest day of his life, and as he wished for, he got a baby girl (not that he wouldn't mind a boy)

-you ended up on naming the baby ria.

-Always has his baby girls in his lap, he will carry ria in his arm and have you in his lap while stroking rias small head with tufts of hair.

-His mother's always comes and visits to help you out with ria when kirishima is out working.

-When you leave kirishima alone with ria she does not want to get feed with a bottle or that formula that tastes ass, she would much rather suck on kirishima's finger til you come home (even though kirishima has tried to feed her multiple times she still does it)

-When Ria turns the age where babies walk he can not say no to those adorable red eyes staring at him. He was a rich pro hero, so why not use it?

-He gets emotional when ria turns 8, he thinks about all the times when she was a baby and always looks throught the baby book of her when she was little, atleast two times a day.

-In the end he asks you for another child, since ria often gets "bored" and she "said" that she wanted a sibling (he completely made it up)

-You often wonder where ria gets her pouting from, when you remember that kirishima Ejirou is your husband.

-You still love them tho.

Bakugo katsuki:💥

(I rushed this, so im sorry if typos!)

-Is completly horrified when you told him you were pregnant with his child, he was afraid that he would be a bad dad and that he would do something wrong. It took you so many hours to reassure him that everything would be fine.

-After he began having more confidence about being a dad he bragged. He bragged about how he was the first in his class to have a child, how lucky he was and that stuff.

-His mom, mitsuki will literally barge into his house just to ignore his yelling and going straight to you to check up on you.

-When you're in your second trimester you have really bad mood swings, you will literally threaten him with a knife from the kitchen and he will just be standing a few feet away from you like🧍‍♂️

-At night when you have cravings he will grumble about how he will not get you ice cream in the middle of the night, when 5 minutes later he will go into the nearest store. (he loves you and you know it🤭)

-At night he WILL have his head on your belly while you're sleeping, listening for the babys heartbeat and movements. (He will always deny it if you catch him)

-One random night your water suddenly broke, you woke up panicked. Beside you was bakugo sleeping, his loud snores very loud (his father roots already showing)

-It. Took. You. Thirty. Fucking. Minutes. To. Wake. That. Bitch. Up.

-You shook his shoulders fast for about 30 minutes before he stirled in his sleep, after not so long he woke up groggily asking what was wrong.

-when you told him his eyes widened and his mouth opened as wide as it could. He was quick out of the bed and grabbing the hospital bag while being careful not to stress you out more than you already were.

-you got in the car and he drove to the hospital, his eyes quickly darting to you a few times. When you arrived he picked you up bridal style and walked right in the doors.

-Nurses gathered around you and walked you to a room where they sat you down and got you comfortable.

•timeskip to when you got the baby bc I'm too lazy to write and + I'm tired•

-when he first saw the baby he couldn't belive his eyes, it looked exactly like him, and brhaved like him too

-The baby locked eyes with her dad, looked him up and down before rolling her eyes and finishing it with a little scowl.

-That was when he knew she was his