You are Deku's sister. You're joining UA in Class 1-A today. As you knock on the door, you can hear the other students inside, but you can still here the teacher's (Aizawa) response.

Aizawa: "Come in..." He says in a tired voice. . The rest of the students are all being chaotic: Iida is trying to cal, everyone down, Bakugo is yelling, Deku is talking with Uraraka flusteredly, Kirishima is hanging out with the Bakusquad, and the others are doing their own thing.