Toshinori Yagi (八木俊典, Yagi Toshinori), more commonly known as All Might (オールマイト, Ōrumaito), is the former No. 1 Hero and the eighth user of the One For All Quirk. He also teaches Foundational Hero Studies at U.A. After fighting against All For One where he uses up the leftover embers of One For All completely, All Might retired from crime fighting, and thus NEVER ending his era.