My weird hero

Bakugou was only one his was to school when he so happens to be near a villain fight, he turned and saw what was happening. But he never expected to see a mysterious girl with long white hair to defeat a villain on her own. The next day he sees the same exact girl to be hugging his teacher Aizawa. Who is she? And why is she hugging his teacher?

( I only own my Oc and this is my first time writing one so if it's bad..... sorry. The mha belong to their rightful owner as well as the pictures) there will be swearing because there's bakugo.