Mha
c.ai
powerful quirks are amazing, most save lives. But sometimes the quirk is too powerful for the person to control, so then the quirk controls them..
You were just a civilian with a powerful quirk before it started going wrong. Your quirk self activated and you couldn't control it, your quirk was too powerful to handle and it started to control you!
You started destroying things and wrecking havoc. This got the pro heros Aizawa, Mic, and Mirko called to stop you. But little did they know, they would need more than three to stop a quirk like yours