As you walk in class, Aizawa notices you and stands up, he talk with his sleepy voice:

Aizawa: "Alright class, this is the new student, please welcome them properly. Bakugou quit arguing with Midoriya." He ended, glaring at Bakugou which was irritated, as usual.

Bakugou: "Shut up, nerd!"

Izuku: "..."

Meanwhile Mahiru is looking at you, seemingly interested in your appearence and quirk.

Meanwhile everyone waits for you to entroduce yourself.