This scenario is gender neutral, meaning that it will have no male or female pronouns. = no she or he's addressing Reader.  Enjoy! Also, I've never wrote one of these so if it's sucky please forgiveness. Also, this might be a reader insert, sorry! ANOTHER ALSO! I'LL BE CHANGING SOME THINGS!
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You fixed your hair in the mirror, and tied your shoes. It was your first day at U.A/Yuuei,

You practically ran to class, excited to see which pro hero was your teacher. You gushed at the thought at having All Might, the Symbol of Peace as your teacher.

You were finally met with a huge door, a girl with brown hair, and a plain, green, haired looking boy. You waved hello, and the bubbly looking girl smiled. The plain boy looked a bit nervous, and didn't notice your arrival. You approached him and placed a hand on his shoulder.

Despite not knowing him, you had always been a kind person, and you just wanted to ease his tension.

He looked at you and blushed profusely. "O-Oh! H-Hello!"

"Sorry if that makes you uncomfortable!" You backed away, hoping that you had not made a bad first impression.

He waved his arms around. "N-No! It's fine!"

"Alright you love birds let's go in!"

"Uraraka-San!"

The girl who you now knew was Uraraka, placed a hand on her mouth and giggled.

"Oh!" The green haired boy turned to you. "M-My name's Izuku Midoriya!"

You nodded. "(Y/n) (L/n)."

Midoriya swung the humongous door open, only to be greeted with the two people he wanted least to see. Still, you didn't know that yet.

"Don't you think it is disrespectful to the past pros?" A boy with blue hair and glasses said almost frantically to a boy with explosive, blond hair.

You finally found the source of the argument, it was because the blond haired boy had his feet on the desk.

"Did your middle school put a stick up your ass? Or were you born with it?" The blond spit back, as they continued to bicker.

You looked back to Midoriya, and saw that you were looking a bit pale. "Midoriya? Are you okay?"

He swayed to the side a bit. "I-I'm fine."

The blue haired boy turned in Midoriya's direction. "I am Iida Tenya!" He said as he walked up to Midoriya. "What you did at the entrance exam was extraordinary!" He bowed.

"Forgive me for jumping to conclusions!"

Midoriya blushed a bit. "I-It's fine!!"

The boy whose name you concluded was named 'Kacchan', side glanced you uninterestingly. You smiled, but he didn't react.
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(TimeSkip to to fitness exam)

"Expelled?!" Everybody yelled simultaneously. Your new homeroom teacher Aizawa had just stated whoever placed in last in the fitness test would be expelled.

Midoriya clenched his fist.

Trying to make friends, you walked up to who you recognized as Kacchan. "Hey, Kacchan, what's your quirk?"

He death glared you. "What the hell?"

You, confused, fiddled with your fingers. "What?"

"You got that name from Deku, didn't you?"

"Who's Deku?"

Aizawa clapped his hands impatiently. "Stop the chit-chatter. Bakugou, what did you score on your softball throw in middle school?"

"'Bout, sixty."

Aizawa passed him a ball. "Now use your quirk."

Bakugou smirked deviously.

"You can do whatever you want, just stay in the circle."

A boy with red hair and sharp teeth walked up to you. "Hello!" You said, with a wide smile.

"You're Kirishima, right?"

He nodded, and scratched his neck awkwardly. "Yeah! I didn't really catch your name earlier..."

"It's (y/n)!"

You both shook hands. You directed you gaze back at Bakugou, you was stretching. Finally, he threw the ball wholeheartedly, yelling, "DIE!"

"Die?"

(Timeskip!)

You, Midoriya, Uraraka, and Iida sat togheter at lunch. A boy with blond hair, and a black streak of hair on his left walked over (lots of walking over, yeah sorry :p)

"Hi, Kaminari!" You said brightly.

He grinned and sat next to you. "Seems like you learn names fast!"

You sighed, "Oh? I thought Bakugou's name was Kacchan."

Everybody at the table erupted in laughter.

You glanced at a boy that had red hair on his left, and white on his right.

You waved, and he hesitantly waved back.

"So, Iida are you a rich boy?" Uraraka asked bluntly. Kaminari snickered a bit.y

Iida facepalmed. "I changed my speech, so I wouldn't have to hear that anymore..."

He explained that he went to a private school, that his brother is the pro hero Ingenium, and that he wanted to follow in his footsteps.

"Wow! That's so cool!" You and Midoriya gushed.

Iida pushed up his glasses proudly. "That's the Iidas for you!"

He secretly looked to you, to see if you were impressed, which you honestly were. The alarm sounded.

Starting today, this was you're hero academia.

(Uh sorry the ending was kinda lame, I tried. AND EVEYR FREAKING TIME I SAY IT'S COMING OUT TOMMOROW LIKE  I FORGET AND LIKE AT THREE IN THE MORNING I WAKE UP AND IM JUST LIKE oh yeah SORRY!!!)