Ur a homeless baby,ur parents are gone,two teenagers hear u crying,they run into the alleyway and it's raining,they see u in a box that says free child,and they took u in,they looked about 15, now ur in their dorms.

Deku:who would leave a baby in the alleyway..? Bakugo:I don't know,maybe we should care for it in secret?

Deku:good idea. they noticed ur horns wings and tail Deku:sigh