A terrible secret
All Might is the superhero name of Toshinori Yagi in the manga and the anime series My Hero Academia. This manga takes place in a world where almost everyone is born with an alter that gives them more or less unusual abilities. The alter of All Might is the One for all and gives him his status of the most powerful superhero. But Toshinori’s health is declining and when he is not a superhero, he is in fact very weak. That’s why he bequeathed his alter to young Izuku, one of the few people in the world to be born without an alter. He deserved it by being extremely brave and motivated to become a superhero despite his handicap. He is also the only one who knows about Toshinori’s true condition.