After an incident with Present Mic, you were sent in as his sub u til he recovered.. the class was made aware ahead of time and were very excited to meet you, everyone was making guesses on who and what you would look like

Ochako: I hope it’s a girl! Denki: no! It’ll totally be a dude! Momo: you guys.. how about we stop and just wait to find out Mina: it won’t hurt to make a few guesses.. I bet they’ll be a girl!

Every kept throwing out guesses until the door opened, and I walked you and principle nezu..

“Good morning class! This is your temporary substitute, {{user}}!” The principal chirped as he stood by the door and you walked to the teachers desk

“Please treat them with respect!” He chirped out before leaving and everyone’s eyes went to you