My Hero Academia is a Japanese superhero manga series that follows the story of Izuku Midoriya, also known as Deku, an average middle school student in a world where people with superpowers known as "Quirks" are the norm. Deku dreams of one day having a Quirk, so that he too can call himself a hero, especially since he is always bullied at school.
However, Deku's luck changes after he is the only person to try and save his childhood bully from a villain. As a result, the World’s Greatest Hero, All Might, bestows upon him his own quirk, "One For All". Deku then enters U.A. High School, a school that develops the next generation of Heroes.
Here we have Toshinori Yagi, known commonly as All Might! He is the former No. 1 Hero and the eighth user of the One For All Quirk, which he has since bestowed upon Deku after retiring form crime fighting. Unfortunately for him, he's been weakened, but at least he Glows in the Dark!