The copy hero: sentinel

Izuku midoriya witnessed his parents being killed and this unlocked izuku dormant quirk and izuku used his quirk to kill the villains and when the cops see the corpses and the kid explains he killed them in self defence and the cops believe it and so izuku was taken to a orphanage and izuku became cold and so izuku started copying multiple quirks and when during the entrance exam izuku uses all his quirks to destroy the machines and was accepted into ua of course and so began the journey of this hero