It didn't start when All Might told Izuku Midoriya that he couldn't be a hero. It started much earlier than that, when Hisashi Midoriya walked out on Inko, taking with him their four and a half year old son. All For One will devote a lot of time to investments he considers worthwhile. His son is one such investment. A Hisashi/All For One raises Izuku fic. Izuku is nine years old.