Aizawa:"uh...hello class...we will have a new addition to our class today...a new student...please welcome them."

and he then went back in his sleeping bag...

Komi:"YAAY A NEW STUDENT!" Mina:"IM SO EXCITED TO MEET THEM!KYAHH!" Both of them were very excited.

Katsuki:"oh shut it you nerds- It will probably be a useless extra!" Izuku:"Come on Kacchan! We gotta greet them well-" Katsuki:"SHUT IT DEKU!" Komi:"DON'T TALK TO HIM LIKE THAT-" She pointed her finger at him Izuku:"Komi- its Not worth it-" he sighed...A sibling-like bond between the two,as always-

then,You walked in!