Zombie boy was requested again and I really like the concept of this request so I hope you all do too. The reader's quirk will be explosion manipulation, she can create small explosions wherever she touches. This will follow the timeline of the ova (oh and language warning for Bakugou lol). Enjoy!

"Katsuki hurry up! We're gonna be late!"

"Shut the hell up shitty y/n. Why do you have to be such a pain in the ass sister!?"

"It's cause you're always being a little shit!" You replied indignantly, slinging your backpack over your shoulder and glaring at your brother.

He glared daggers at you, his red eyes swimming with anger until Mitsuki snuck up behind him and lightly smacked the back of his head.

He starting yelling an endless stream of curse words at her and you tried to suppress your laughter. They were always bickering nonstop, and you had a pretty good feeling that you were the favorite child.

"Alright mom! I'm leaving!" You said, your loud voice overpowering theirs.

Mitsuki smiled at you sweetly, giving you a small wave goodbye. "Have a great day sweetie!"

"Shit-fuck! I have to go!! Outta my way sister!" Katsuki yelled, forcefully pushing past you so that way he was the first one out the door.

Why does he have to be my brother? I must have built up some really bad karma in my past life!

...

The school day started off normally, until Aizawa explained to the class that "special guests" from another school would be joining you all.

"They are from Isami Academy so treat them with respect." Aizawa said tiredly. The mystery guests walked in and began to introduce themselves.

There were four students in total, and a girl with glasses and striking silver hair introduced herself first.

"Hello nice to meet you all. My name is Sekigai." she said politely, bowing her head forward slightly.

"I'm Dadan Tadan. Nice to meet you."

"I'm Fujimi."

You saw Katsuki perk up at that introduction, and so did you. What a rude way to introduce yourself!

"Psst, hey Katsuki! He's kind of like you. Rude as shit!"

You heard Katsuki grunt in response, as Mongoose ran over to Tsuyu and hugged her tightly. Fujimi clicked his tongue in annoyance, and yelled, "Mongoose, quit being so frickin' friendly with these U.A. bastards!"

Katsuki immediately shot up yelling his own insult back. "What the hell was that you Isami piece of shit!?"

"Katsuki stop--" you started to say, before you were rudely interrupted by your furious brother.

"Shut up y/n!"

"No you shut up Bakugou." Aizawa interjected and Katsuki immediately stopped yelling much to your delight.

Fujimi scowled at Katsuki, before his dark eyes traveled over to you for a moment. His eyes widened slightly and you decided to smile at him. Even though your brother was one of the rudest people in class 1-A, that didn't mean you had to be.

You gave Fujimi a big bright smile (you had been practicing your hero smile in the mirror after all) but he averted his eyes from you quickly and scowled.

Hmph...maybe Katsuki has the right idea about being rude, you thought to yourself as you got up and followed the rest of the girls to the changing room.  

...

"So basically all you have to do is survive! This is real survival training students. So give it your all!" All Might explained loudly after you all had been assigned teams. You were on a team with your brother, Yaoyorozu, and Kirishima.

"Yes sir!"

As you all ran to your starting points you noticed Katsuki shouting at Fujimi about something that was most likely unimportant. Fujimi seemed to take Katsuki's insults in stride though, since he was retorting back with just as much spite.

Fujimi...I better watch out for him. He seems strong. Whatever his quirk is, it might end up being a real pain in the ass.

"Yaoyorozu, do you have a plan?" you asked your friend, and she tilted her head before furrowing her eyebrows together.

"Yes, but I doubt Bakugou will want to follow it...because it involves patience and calm--"

"Oh yeah that won't work!" you said immediately, knowing that Katsuki would rather jump off a cliff than be patient. She shook her head in defeat and sighed.

"But we have to work as a team y/n. That is the main point of this exercise." she said, as she slowed down to a jog and stopped at the starting point. You stopped too and observed your surroundings, taking note of how dense the forest actually is and other things that could possibly get in the way of your explosions.

You caught your breath and spoke. "Maybe it doesn't have to be. Like if we split up, then we'd be able to cover more ground, take out other teams, and win!"

"I can't take on a whole team by myself!" Yaoyorozu said, her dark eyes widening in fear.

"Well I never said it would be easy I just--"

"Are you shits done talking or what!? I need to go pummel that Isami shit punk!" Katsuki yelled, as he adjusted the tightness of his grenades.

You scowled and clicked your tongue, until you were struck with a brilliant idea.

"Katsuki! I can go after his team instead...I think I can take them." you said, already walking away from your team quickly. "I think they are the biggest threat in this training, so I'll take 'em out while you all confront the other teams!"

Katsuki yelled at you incoherently, and Kirishima called out your name once before you were completely out of earshot.

You aimed an explosion at your feet and propelled yourself forward, already thinking of a battle plan that you would use against Fujimi's team.

...

Meanwhile...

"Sekigai, what's that noise?" Fujimi asked the white haired girl and she double checked her floating screen, that could track people's movements. Multiple loud booms could be heard throughout the forest and it was making Fujimi slightly nervous, even if he wouldn't admit it.

"I see only one attacker, but they're moving very quickly through the forest. The way they're moving...it's like they're being propelled. I remember watching the sports festival and Present Mic mentioned that Bakugou has a sister. She made it pretty far in the tournament too...she was sitting right behind Bakugou in their class. It could be her, or Bakugou."

"Are you saying that that bastard...has a sister like her?" Fujimi asked, before a deep frown began to set in on his face. "There's no way!"

"I'm just saying it's a possibility that it's her--"

"Hey Isami students!! It's a pleasure to finally meet you all in battle!" a loud and commanding voice yelled out, just as they landed right on the cliff-side that Fujimi's team was on. "I better take care of you first!" she said, immediately rushing in to take down Tadan. But before she could take him down she stopped in her tracks.

"Don't worry guys. I've got her!" Mongoose said, using her three second paralysis quirk.

You fell to the ground for a moment, before immediately gaining control of your limbs. "What the hell was that!? What a limited quirk!" you said tauntingly, as you aimed dozens of small explosions at their feet.

Fujimi gasped and stepped back along with Sekigai, Tadan, and Mongoose who were equally surprised by your ruthless attack. You were definitely Bakugou's sister that's for sure.

Smoke billowed out and you coughed a little bit, annoyed that you had momentarily lost sight of the Isami students. Smoke accumulation was one drawback of your quirk because it made a thick smokescreen which allowed people to sneak up on you.

But thankfully for you Fujimi wasn't exactly the sneaky type. "Oi! Are you really that bastard's sister!?"

"Hmph! I have a name you know! Why don't you come out of hiding so I can say it to your face!"

"Alright then! If that's what you want!" Fujimi replied, bursting through the smoke and rushing towards you quickly. You leaned down getting into a fighting stance, but before you could do anything else Fujimi stretched out his arm and the plastic tubes that wrapped around his hero costume suddenly turned pink.

You cursed out, as the pink gas began to surround your body and invade your lungs. Your vision became blurry, and you could feel your knees hit the ground.

"I'm sorry...my zombie quirk has a time limit...I'm sorry..."

...

The next thing you knew, you were flying through the air. No, you weren't flying...you were falling down!

"A-AAAAAHHH!! What the hell!!" you screamed out, and you noticed you weren't the only student falling.  Other students from 1-A and the Isami students were screaming out as they came in for a hard landing near the trees.

"Deku you shitty nerd! You wanna fight me that bad!?" Katsuki yelled, his booming voice overpowering your screams. "Well come and get me!!"

Midoriya...he must've blown us off the cliff-side!  

A loud explosion could be heard just as you hit the ground with a loud grunt. "Ouch! Ugh, I'm too old for this!"

"Mmph, umph shit! Get offa me!" a muffled voice cried, and you looked down realizing that you had landed on top of someone. Someone...Fujimi!

"A-Ah Fujimi! Sorry I didn't mean--"

"Shit it's my fault. I ran over here to break your fall." he said, slowly getting up from the ground.

Your eyes widened at his words, and you began to smile. "T-Thank you. Thanks to you, I didn't get injured!"

"Tsk, you still got scratched a lot though...um...what's your name?"

"Y/n! Oh, my god Fujimi your cheek is bleeding! Here lemme look at it." you said reaching over to touch his face. He flinched back slightly, a faint blush dotting his cheeks and nose. "Just lemme look at it."

"Alright fine!" he said, shoving his hands into his pockets a scowl forming on his face. You grinned and traced your fingers over his face cheek but not touching it. Without thinking you ripped off a piece of your shirt and used it to blot his cut.

"Y/n! Are you--"

"No I don't really know what I'm doing, but I've watched a lot of action movies so--"

"No I was going to say...um...I was going to ask you if you were free on S-Saturday!"

"Free? For what?" you asked, gently applying pressure to his cut. He fidgeted and his black eyes flitted around, refusing to look directly at you.

"I w-want to get to know you more! So...by free...I meant do you w-want to go on a date?" he asked, his voice growing louder by the second. You chuckled, and nodded your head.

"Yes, I'll go on a date. But you should really wait to turn a girl into a zombie after the first date, you know?"

"Hey that wasn't my fault! You were attacking me!" Fujimi yelled, but you quieted his protests as you leaned forward and pecked his uninjured cheek softly.

"I'm sorry about that." you said once you pulled away and Fujimi just grunted, his face completely covered in a fiery blush that nearly reached the tips of his ears.

"W-Whatever...just don't attack me on our date!"

"Aye aye Fujimi! I most definitely promise not to do that!"

Fujimi rolled his eyes, but gave you a tiny smile nonetheless as you two started to walk back to join the other students.