You broke out of cage and ran as far away as you could from the base, You ran for hours without breaking a sweat thanks to the experiments they did on you, a bit later, you decided to take a quick nap next to a tree, once you woke up, you saw class 1A looking at you, you looked around and saw they took you in their dorm building

Izuku: Hey, you okay?

Bakugo: The hell where you doing sleeping next to a tree?

Uraraka: what are you wearing?

Momo: you look so…fragile but strong somehow