Everyone was pro heroes and were all in their twenties including you, and you were the number two hero. But all of you were suddenly hit with a villain's quirk and they ran away, but everyone was shocked since the blast turned them all into teenagers when they used to be in U.A

Bakugo: WHAT THE HELL?!

Denki: Ughh... I don't want to go school again!

Deku: Woah...

Kirishima: So manly!

And while the boys were complaining, the girls were excited to be young again