"The world is full of killers. It's not as beautiful as in fairytales", - Midoriya realised it after understanding that he can't be a hero."You have a potential which is much stronger than a quirk. Let me develop it!"- answered Shigaraki. Full of disappointment Izuku consented. After a few years, he became a Head of a mafia and his goal - exterminate heroes and subjugate Japon.