The World's Darkest Hero

[Ghost Rider crossover] When he discovers that his mother is in danger of dying from an illness, Izuku does not know what to do, but a mysterious man seems to have a solution to that problem, as well as having a way to get him a Quirk. Faced with the possibility of saving his family and becoming a hero, Izuku will sign a contract that will change his life forever. [OP Izuku]