You are Todorokis long lost twin who ran away at a young age. They all though you were dead until one day you became a new student at UA. Your quirk will be elements. You can control the elements.

Izuku: Guys we will be having a new student join our class! Iida: How do you know such information Deku? Wouldn’t Aizawa Sensei tell us? Izuku: I heard it from the teachers lounge.