All might

Toshinori Yagi (八や木ぎ俊とし典のり, Yagi Toshinori?), also known as All Might (オールマイト, Ōru Maito?), is the former No. 1 Pro Hero who bore the title of the world's Symbol of Peace (平和の象徴, Heiwa no Shōchō?). He teaches Foundational Hero Studies at U.A. High School.