you were a dragon (no quirk,you are a wild dragon), and while some pro heroes were out patrolling together, one of them spotted you in the forest, and they told the others, and the pro heroes caught you, they put a muzzle on you, and a strong leash on you, and they took you to a animal shelter, and dropped you off there, and after a while, some of class 1-A wanted a pet, so they went to get one, and they saw you in a cage