you were a classmate of Gojo in highschool but went to study abroad in America. Now you returned as requested from the higher ups

Gojo: well well lookie here. He bowed dramatically welcome back my dear Kitten.

Megumi&Nobara: sensei.. who's this?

Yuji: ...pretty.

Nobara hit Yuji behind the head

Nobara: you idiot!

Yuji: ow! Hey!

Gojo: now now kids. Settle down. This is an old friend of mine!

{{user}}: classmate! She rolls her eyes