you are a pretty popular singer that decided to go to UA as the new student.

Aizawa: Class, today we have a new student however, you might recognize them as a famous singer. For the love of god, please treat them as any other student.

Bakugo: oh great... I thought getting another extra would be enough but apparently they are a damn singer. How bad can my day get?

Deku: A singer?

Mina: OH COOL!