It's beginning to become late at night, 9:00, and Kivi is on her way back to the dorms. In a bubble far above her is her groceries, mainly containing meat for Hades, Dusk, and Lucifer along with canned food for the others. Curfew check in for the dorms was in 30 minutes. She knew she would be late unless she used her quirk.

"What a bother," Kivi sighs. "I shouldn't even have a curfew. I have shit to do." She weaves around the people before finally getting to a less congested area.

Suddenly a child, no older than six, comes barreling down the sidewalk, heading right for her. She doesn't think to move, thinking he will as he sees her. He slaps his hand across her leg and keeps running with a snicker. A man comes running after the boy, outta breath. Kivi turns to the boy and surrounds him in a force field, pulling him back towards the man.

"Ah!" the boy shouts in complaint, punching against it.

Kivi feels her clothes suddenly get a bit tighter than usual and her shoes begin to hurt her feet. Her body feels bigger and much taller than usual.

"Ah, thank you for catching him," the man pants.

"Is this your son?" Kivi speaks, noticing her voice is much deeper than usual. "What the fuck? Why is my voice so deep?"

"Ah, did he touch you?" the man asks, talking about the boy.

"Yeah," Kivi says.

"Then you're not usually a boy?"

She blinks twice. "What?!" Kivi shouts, looking at her body as much as she can.

The man sighs. "Sorry, this is my son's quirk. He doesn't have good control of it yet, so I'm sorry to say you'll be this way for a few days before it wears off."

Kivi looks livid as her right eye twitches in annoyance. "Are you his father?"

"Actually no, I'm his mother," the man sighs.

Kivi turns to glare at the little boy, who's still trapped in her bubble. His arms are crossed with a pout on his face.

"You're lucky I'm not a villain, little one," Kivi warns him. "If I were you don't wanna know what I would do to you. Villains don't appreciate these kinds of pranks. You don't want to get kidnapped by a villain now, do you?"

The boy gulps. "N-no..."

"Gyaku, tell the girl you're sorry," the mother scolds.

"I-I'm sorry," he apologizes.

Kivi releases him from the force field with a smirk. "Will him touching me again not turn me back?"

"No," the mother sighs. "We're working on it."

"Do you mind if you give me your number?" Kivi asks. "If he wants to practice on some people. I know a bunch of candidates."

"Really?" the mother asks, pulling out her cell phone.

"Yeah," Kivi says. "I'm Quacchio Kivi, but call me Kivi."

"I'm Hatta Mayumi. Please, call me Mayu. This is Gyaku."

Kivi enters her cell number into Mayu's phone then texts herself, so she has her number too. She hands Mayu her phone back before pulling out her own and looking at the time, reading 9:20. "Well, I gotta go."

"Is there some way I could make this up to you?" Mayu asks.

Kivi begins to walk away. "I'll text you when I think of something, but I seriously gotta go. See ya!"

She waves behind her as she walks a little faster to get to the dorms. Her phone begins to ding with texts from Ochaco and Izuku. Kivi gets through the gates with her pass right as the time clicks to 9:30. Everyone is seemingly already in their rooms. Guess Aizawa was not in a good mood. Usually, everyone's out until 11 or so.

"Glad you made it back. You were almost late," Aizawa voices behind her. "Wait, who are you?"

Kivi turns to Aizawa and his scarf immediately comes undone, dashing towards her. She's immediately wrapped as his hair is risen, hindering her from using her quirk to block.

"Aizawa, it's me," Kivi says. "Some little boy used his quirk on me."

The scarf tightens. "How do I know you're my student?"

"Your favorite cat of mine is Mew," Kivi deadpans. "She's a Siamese. You have two cats. I have 10. Two panthers named Hades and Lucifer."

Aizawa drops his scarf to normal. "A quirk that turns you into the opposite gender. Interesting. He couldn't turn you back?"

"No, I'm stuck like this for a few days," Kivi admits, stretching with an annoyed sigh.

"Well then you're gonna need some different clothes. You're much taller than you usually are."

"Yeah, alright. I think I'll be good for my own stuff. I have quite a bit of oversized clothes."

"Good, goodnight. You're still going to class tomorrow," Aizawa says before he heads off to his room.

Kivi groans as she heads to the elevator, already planning to borrow a boy's uniform. She heads up to the fourth floor and heads to a certain room, banging on the door once she arrives.

"What the hell?! Why you gotta knock so hard?!" the aggravated boy shouts, marching up to the door and slamming it open. "Who the hell are you?!"

"Bakahoe, give me your spare uniform," Kivi demands.

Recognition passes on his face. "Blueberry?!"

"Yeah, asshole, it's me," she replies, shoving past him and into his room.

"Who the fuck said you could come in?!"

"So, where is it?"

"Like hell I'm giving you my spare uniform!"

"It seems I have shifted to your height," Kivi says. "I don't have much choice."

"Too damn bad! You're not getting mine!"

She moves over to his closet and surrounds him in a force field before he can intervene. She plucks out the hung up uniform as well as a pair of shoes. "Thanks, Pommi. Get it? It's short for Pomeranian. By the way, for someone who hates germs your room is disgusting. Clean it."

"Get the fuck out! I'll kill you!"

She leaves the room, shutting the door behind her as the force field diminishes. Her cats greet her as usual, seeing as she smells the same. She sets down the bubbles of groceries. "Guess what I got?"

...

The next morning Kivi doesn't leave till everyone has left for class. She puts her long hair up halfway and coats the top of her head with some dry shampoo. Not that her hair was greasy but long boy hair typically looks greaser. Well, at least to her it does. She gives each cat nearby a pat on the head before leaving.

Being last had its perks. The fawning reactions of the other girls was hilarious. Every girl she passed in the hallway, totally fawned.

"Oh wow, who's that hottie?" Mina voices.

"Looks like a new student," tape boy says.

"Another one?" Eijiro questions.

Bakugo scoffs.

"Why does he have to be so attractive?" electric boy complains, annoyed Kivi's gotten all the girls' attention.

"Where's Kivi anyway?" Ochaco asks.

"Yeah," Izuku tags on.

Aizawa gives Kivi a glance before turning back to what he was doing before. The class looks questioningly towards Aizawa, waiting for him to introduce the boy. Kivi moves by everyone and takes a seat at her desk.

"Uh, um. That seat is taken by another student named Kivi," big lips speaks up.

"Yeah, I know, sugar boy," Kivi replies, staring menacingly.

"How do you know my quirk?" he questions.

"I know all of your quirks," Kivi grins.

"What? How?!" Mina exclaims.

Bakugo rolls his eyes as a tick mark forms on his head. "Because he is Kivi, dumbasses."

"What?!" nearly the whole class screeches.

"Aww, Bakahoe, you're no fun. Be honest, you never would've known it was me if I didn't call you the nickname I gave you," Kivi huffs.

"Kivi, you're a dude!" electric boy voices.

"Thank you, Captain Obvious," Kivi replies, rolling her eyes. "A quirk got me, and I'm like this for a few days."

"Kacchan, how'd you know that was Kivi-san?" Izuku asks.

"That's my uniform, Deku."

"Ooo," Eijiro wiggles his eyebrows, nudging Bakugo.

"I'll kill you," Bakugo replies harshly, shoving him away.

"Alright, settle down," Aizawa says tiredly. "We have work to do."

~~~

Kivi makes her way to Aizawa. "Aizawa?"

"What do you want?"

"The kid who turned me this way needs to practice his quirk. You mind if we have him here for a lesson to train it?" She smirks evilly.

Aizawa looks up at her evil grin and sighs. "You really are troublesome aren't you?"

"Kinda."

"As long as he doesn't touch me, I don't care."

"Tomorrow?"

"Sure," he mumbles, stuffing his body into his sleeping bag.

"Sweet," Kivi cackles evilly to herself.

"Kivi-san!" Mina calls out.

Kivi sighs, turning to everyone. "What?"

"Wow, you are really attractive as a boy," Tsu mutters.

"She's more attractive as a girl," Mineta huffs.

"Your hair looks really good long," earplug girl compliments. "Well, as a guy. ...Not saying your hair doesn't look good as a girl!"

"You're even scarier than usual!" electric boy exclaims. Kivi glares at him, making him shake like a leaf. "S-see?"

"Can I braid your hair?!" invisible girl shouts.

"What makes you think I'd let you braid my hair normally? Why would I let you now?" Kivi huffs, glaring where she assumes her eyes are.

Invisible girl flinches back. Kivi turns and leaves to the dorms.

Ochaco rushes up behind her. "Kivi-san, are you okay?"

Kivi sighs agitatedly. "No, I'm not okay! I've been turned into a boy, and I've had to pee since I woke up today!"

Ochaco blinks before beginning to laugh as her face flushes red. "A-and–"

"All day I've been contemplating whether I should go to the girl's or the boy's bathroom! Also, I don't exactly want to see my giant dick!" Kivi shouts.

"What?"

"I can feel it!" Kivi admits, hair dropping into her face and hiding her blush. "Bakugo's pants are a little tight in the crotch area. These pants are too small probably even for Bakugo. Which is probably why they were in his closet and not draped over his chair."

Ochaco bursts out laughing. "Kivi-san!"

"I'll kill you!" Kivi shouts angrily, chasing after her.

...

The next day, Kivi walks into homeroom somewhat early. On the floor asleep in his yellow sleeping bag is Aizawa.

She walks up to him and nudges him with her foot. "Hey, Aizawa? The gender changing boy is coming today. Wanna help me prank the class? I know how much you like to torture us."

Aizawa peeks open an eye, looking up at her. "Sure, whatever."

"Good," she nods, walking to her seat and propping her feet up onto her desk. She gets a text message after a few minutes from Mayu. She sends a wait at the gate. "Aizawa, they're here. I'm going to get them. Bring the class down to training ground beta. They can be in their costumes or gym clothes or whatever."

"Alright," he grumbles, pulling out two passes from his sleeping bag. "Take these, so they can get through the gates."

She takes the lanyards with a thanks and heads to the gate. Standing nervously just outside the gate is Mayu, back to her normal female self, along with Gyaku who's looking around excitedly.

"Mayu, Gyaku," Kivi waves to them. She hands each of them a pass and they put them around their necks.

"Kivi," Mayu sighs. "This place is so much bigger in person. Are you sure we can be here?"

"Yeah, I ran it by my teacher. He's alright with it. He's kinda mischievous in a round about way. Likes to torture us with hard activities."

"How will Gyaku learn to control his quirk better?"

Kivi grins. "We're going to turn all my classmates."

"Oh, alright."

Kivi bends down to Gyaku's height. "When I tell you, I want you to touch every person you can reach. Everyone except my teacher and your mom." She leans in closer and whispers. "It's to prank them."

Gyaku's face molds into a grin, matching Kivi's. "Okay!"

"Alright, follow me," Kivi says, beginning to walk towards the training field. "My class will meet us here soon. If you wanna practice, you can try turning me back to normal."

He begins tapping her, trying to turn her back with no avail. He looks down in sadness. "I can't."

"Don't worry, you'll learn to control it one day," Kivi reassures. "Gyaku, how old are you?"

"Five!"

"Yeah, you'll get it soon," Kivi says, noticing Aizawa making his way towards them.

"I'm Aizawa," he introduces. "Kivi's teacher."

They introduce themselves and chat while the students show up.

"You ready, Gyaku?" Kivi asks, watching all her classmates group together.

"Yeah!" he nods determinedly.

They all arrive.

"Alright, these two are friends of Kivi's," Aizawa begins. "Mayu and Gyaku. They're going to help you train today in a different point of view."

"Go Gyaku," Kivi whispers.

Gyaku smiles and rushes towards all the kids, pressing his hands against everyone he can get before getting caught. He rushes back beside Kivi. The smirks across their faces match.

"Have fun," Aizawa says with a slight grin.

"Huh?" Eijiro tilts his head.

All of them begin to turn except Fumikage, Shoji, big lips, and Koda. They all begin to scream as they catch each other's differences.

"Kivi-san!" they shout.

Gyaku and Kivi begin to evilly laugh.

"Payback, assholes," Kivi grins.

"I'm gonna kill that little punk!" Bakugo shouts, marching towards Gyaku.

"Alright, Gyaku, try to turn them back," Kivi says, putting a barrier over Bakugo. "Start with grape boy over there." She points to Mineta who is currently drooling over himself as he squeezes his newly grown boobs.

"Why am I so flat chested?!" Pikachu fusses. He looks around at all the other guys. "Holy crap, Bakugo!"

For the remainder of class, everyone trains while Gyaku tries turning Mineta back only managing to get rid of his boobs, much to his disappointment.

~~~

"How are we going to do bathroom arrangements?" Mezo asks, speaking through one of his arms.

Kivi shrugs. "I don't care. I'm going to the boys' hot springs. I dodged getting a shower last night, but I'm not doing it again. Honestly think we should all be in the guy shower. The ones who weren't turned can take the girl's side."

Mineta is a drooling mess but also conflicted considering they are originally males.

"That does sound like the best scenario," Momo nods. "I don't like it though."

And that's how the most awkward bath to ever overcome them happened. Mineta was sent along with the boys who weren't turned. This bath didn't stop Pikachu from telling the new males that they have big dick energy. Earjack stabbed her earjack in his ear for that along with a tongue slap from Tsu.

Most of the boys were bathed by the girls as they were too embarrassed to do it themselves. Either way Izuku, Iida, Kiri, Mashi, and even Bakugo were flustered the whole time. Bakugo wouldn't let anyone but Kivi bathe him, much to both of their annoyance.

"I really fucking hate you right now," Bakugo growls.

Kivi grins. "Get in line."

Momo ended up having to make a lot of clothes for everyone which tired her out and left quickly for bed.

"We need to make rules!" Iida exclaims, arm chopping.

"What kind of rules would we need after that?" Pikachu groans.

"It's safe to say that we will not have any kind of sexual intercourse," Iida lists.

Kivi bursts out laughing. "You act like any of you could actually get some!"

"Well, she's not wrong," Pikachu and Mina nod.

"Especially with each other."

"I think I just threw up a little," Bakugo admits.

"O-or to yourself!"

"Come on, Iida. You aren't even a little curious? You have the opportunity you may as well take it," Mineta says.

"As much as I don't want to agree to that," Kivi shrugs. "I agree."

That causes everyone to whip their heads to her in surprise.

"K-Kivi-san?!" Izuku shouts, face completely flushed.

She shrugs. "It's an opportunity of curiosity. I don't really have a filter, and I could really care less what others think. I, for a matter of fact, have explored. You honestly kinda need to if you want to make this easier. This was entertaining, but I have a phone call I need to answer soon. Bye hoes."

~~~

After her phone call, Kivi heads out with her panthers and Dusk to the small park on school grounds.

Once again the boy from before is hanging out on the same bench.

"Ah, I was hoping you were gonna be out here," Kivi says.

He looks up at her confused. "Do I know you?"

"Ah, right. I'm a boy for now. A little boy's quirk. I'm Kivi."

"Kivi? Really?"

Kivi plops down next to him. "Yeah, out on a walk with my demons at Dusk."

"It's past dusk."

Kivi chuckles. "You'll see. Anyway..." She pulls one of the lanyards off from around her neck and puts it over his neck. "This is a key card to get to my floor in the dorms. Whenever you wanna hang out or something. Figure I need at least one friend. I choose you."

He gives her an exasperated look. "You wanna be friends with me?"

"Why wouldn't I?" she retorts. "Your quirk is cool. Your hair is fluffy."

He raises an eyebrow. "My hair? Seriously?"

She shrugs and reaches up to ruffle his hair. "Fluffy."

He slaps her hand away. "I don't need a friend. I'm not here to make any."

"Everyone needs a friend. Besides what's perfect about our friendship is that we won't have to constantly see each other. That way we won't bother each other all the time."

"You're already bothering me."

"Yeah, but not all the time."

...

The next day was entertaining. Class 1-B's Tetsutetsu Tetsutetsu, which Kivi has fun saying, along with Monoma and most of the other boys have totally fallen head over heels for the newly made girls of 1-A. Though none of them have a clue that they're actually 1-A's boys. Same goes for most of their girls falling for Momo and Kivi. The other girl turned boys weren't as appealing apparently. Nobody thought to correct them either cause they forgot to, don't care, or wanna see how long this pans out.

All during lunch Monoma was shamelessly flirting with Bakugo's group of new girls. Much to their amusement and annoyance. Tetsutetsu was all about Izuku or Kirishima. Then all the girls were either near Kivi or Momo. Most kept their distance as Kivi harshly glared at them.

Eventually though Kivi got real into it with a inner sinister grin. She began flirting back with the girls, making them swoon and fall over.

It took a few days before everyone returned to normal. This experience was very informative. Kivi definitely wouldn't mind doing it again as long as she can turn back when she wants.

...Have some more UwU Bc last chapter wouldn't let me put more than 20 pics...