@@SuperDreamSenki2So, remember when Deku was still quirkless, and he saved bakugo in that fire accident? After that, All Might appear in front of him to give him One For All. Instead Deku didn't know what to do in his life now, so he decided to jump off a building. After he jumped he saved by a villain called "Kurogiri". He's quirk allows him to create portals anywhere he wants to and he also works for the Number 1. Villain All For One. Deku tells him that if he can't be hero, then at least he wants to become a villain. Kurogiri accepts his wish and so he teaches him some ninja moves and sword fighting, and he became part of the Leauge of Villains. If you're interested, here's the link: kzbin.info/aero/PLTuIyvzU39vkFS_ukc7_WueZO5GLyq8mt Enjoy :)