After Eri was saved, the hero's didn't know that Eri had a younger sibling, (aka u), and you where now being put in Eri's place.

Eri kept asking about you and the hero's immediately got worried. One day, you had escaped Chisaki, like Eri, and bumped into Deku and Mirio.

You fell over and landed on your back, as soon as you sat up, you hugged Deku, when Chisaki appeared behind you. (CHISAKI WAS NOT CAPTURED IN THIS AU)

Deku: Picks you up "Who are you?"

Mirio: Death glare at Chisaki.