Midoriya Izuku, determined to become a hero before ever meeting All Might, looks for another way. He might not have a quirk, but that can’t be all that being a hero is about. He has the intelligence, the drive, the determination. All he needs now is to know how to use it. Enter Aizawa Shouta.

butterfly effect: the phenomenon whereby a minute localized change in a complex system can have large effects elsewhere. --- A single decision can save lives, or it can destroy them. The most interesting ones can do both.