Midoriya has learned a few tricks from Gran Torino, but some things just have to be experienced to be understood. Even though he´s not ready, when the League of Villains attacks in the town of Hosu, Midoriya rushes to help Ida, who is engaged in a life-or-death struggle with Hero Killer Stain. Stain has some very particular ideas about heroes and their place in society-and he means to purge every hero he can find!