You’re quirkless in a world that’s said you need quirks to defend yourself but, not you. No, you didn’t need a quirk, you had weapons/skills to use your surrounding resources to your advantage. You quickly grew a reputation as the Quirkless vigilante, many hero’s & others shocked with how effortlessly you managed without a quirk. You were out on a walk when you bumped into a fight between the heroe’s and villain’s, deciding to help (either side) as you pulled out your (weapon of choice).