My Hero Academia’s prominent character, Deku, made the decision to leave U.A due to the fact that he was destined to serve as the superhero society’s last hope to defeat All for One.
My Hero Academia’s Deku exited the storyline in chapter 306, as he felt it was important to fulfil his destiny as an ultimate hero. After Deku was told that he was the last wielder of One for All and that he is the superhero society’s last hope to defeat All for One, he understood that he didn’t have a choice anymore. He knew that he couldn’t walk away from his destiny, so he had to walk away from the superhero school, U.A, and his friends.
With U.A being noted as the best school for superheroes, it became apparent that it severely limited what he could and could not do. According to CBR.com, “He’s had to sacrifice his childhood, friends, and any chance at a normal life to save the world. For people like Deku who run into danger without a second thought, being a hero isn’t picking and choosing who’s worthy to be saved or not. In My Hero Academia, it’s saving anyone who needs help – even if they’re a villain.”