You quickly grab box and your things. Without stopping for a breath, you quickly run into the bathroom to do your necessities (idk). After that, you lock the door and literally flew towards U.A, leaving Mina in a breathless gasp of laughter.

"Hey! Let me join too!" Mina catches up, running beside you.

"The wind feels great, right?!"

"Yup!"

After a few minutes of silent running, you've arrived. 

"We're... here!" Mina panted, hands resting on legs. 

"Y... yeah! We are!" You look up at the glassed building and sighed in amazement. "I really am... here.I'm here. I'm here."

"Now c'mon, we gotta get inside!" She pulled you along as you dumbly stare at the things you passed by, including a drooling Mineta, which you quickly throw your pencil at. 

Disgusting animal.

You arrive at the dorms, palms sweaty and feet shaking. Mina open the door while yelling, "Hey suckers! Did ya miss me?!"

"Mina!" Came from inside as she was tackled into a hug by Toru and the Bakusquad while the rest of the class came to meet her. 

Now you're really shaking. There, right in front of you, is Class 1A. Class 1A. Let that sink in for a moment. 

Holy shit. Class 1A is in front of me. What am I supposed to do!? Ask them stuff? Show them something? Wait and stare at them cinnamon puffs? Cry with joy? Hope I ain't killed by Bakugou? What to do? I'm confusion. I'll just start reacting like I don't know stuff.

"IS THAT AN INIVISIBLE GIRL?! AND, FOR SOME REASON I JUST NOTICED MINA HAS PINK HORNS?! Did all of you dye your hair? Is that a bird man? Is that rock boy? Is Bakugou's hair always spiky? Can Yaoyorozu make babies? Is Todoroki/Canadian Map the literal interpretation of Katy Perry's song?" You quietly mutter. 

While you are contemplating, Box yelled at you, turning everyone's attention to you. "Hey, Roselle! A literal cinnamon bun is staring at you!" Then you did snap out of your trance. 

Class 1A stare at you. You begin to notice their stares burning holes. "R-right... Em...pleasedon'tkillmeI'mnotabadguyIswear.  (Please don't kill me I'm not a bad guy, I swear)"

"Oh yeah! I forgot to introduce her! She's Roselle, a girl I met. Oh, and Box, her talking box." Mina interrupts.

"Sup." Box greeted as you wave excitedly at them. "Rose, you know you're never going to get anything done if you don't move right?"

"Hmm." You walked towards the class. And fell.

"Ow!" You yell as your body slam onto the ground. 

"Argh... Why is the ground so soft?" You ask, touching the 'ground' with your fingers. 

"F... f***... you..." A weak voice came from underneath. You jump up immediately, feeling frightened [I mean come on, we're talking about Bakugou. Aren't you frightened? I mean look at him]

[... Never mind. Let's go on with the story!]

"I-I'm sorry! Please don't kill me!" You stammer, looking everywhere but him (since it's extremely awkward). The rest of the class just stare at you as you get up very quickly. 

"You... piece of shit...." You feel a raging aura from him as you slowly get up, back away... and run straight into Mr. Aizawa. 

Oh no. 

^^^^^^^^^

"Now, will you explain to me what happened?" 

"W-well, um, you see..." You mutter looking down. "I was walking towards the class when I just happen to crash into Bakugou... ehehe..."

Aizawa sighed. "Oh. Well then, get up Bakugou."

The blonde lifted himself up and walked back into the dorms, grumbling and cursing under his breath.

"Now, state your name. Answer honestly, or you'll end up in jail. Or worst." 

You gulp nervously, giving Mina a 'help' look. She shrug in reply. "M-my name's Roselle  Rebecca, I'm 12, I live in an apartment near hear, just a few blocks away. I'm a female, as you can see and I go to school in Deri Deri High School." 

"Ah. Do you have any connection with any of my students?"

You start to ramble. "Well, not really, but I met Mina last night and we hung out then she invited me here and I said of course so... I guess?"

Aizawa sigh again. "Do you have a quirk?"

You shake your head.

"Ah. Well, enjoy your stay here then." He closes in on you. "Do anything bad, and I'll kill you. I will not hesitate." Aizawa walked away, leaving the class stunned and you absolutely afraid.  

"No way!"

"Did he really trust her?"

"Then there must be a reason to!"

"Yeah!" 

While the students chatter between themselves, you pick Box up and walk towards Mina."Hey, Mina!"

She turned around. "Roselle! Bro, I'm so sorry, I should've spoke up too!" You shrug it off. 

"Nah, it's okay! I get to stay here for a day, so it works!"

Mina squeals, resulting in Bakugou to swear at her. "F** off black eyes!"

"It's Mina!" 

"Don't give a f***."

Mina sighs. "Is my name that hard to remember? Anyway, Roselle," She giggles wickedly. "Let's show Hakagure that."

You purr. "Of course~ Let's go. Shall we?"

Box sighs and stares at the class. "Class 1A, I apologize before hand. She's kinda off her rocker-"

"We shall." Mina interrupts.