Izuku, who was targeted by a super-villain, was rescued by his master's hand by his idol in person! He discovered then that All Might, who was greatly reduced by an old wound, could no longer use his alter only three hours a day... Also, when his comrade Katsuki was attacked a few moments later, his blood was only one turn: despite his terror, he rushed to the rescue of the young boy! Witness to this act of bravery, All Might decided to make Izuku his successor. After a drastic training, our apprentice hero managed to integrate the prestigious Yuei high school, but there was a hit: he could not control the One for All, the power inherited from All Might...