My Hero Academia: Bio-Mechanical Meltdown

It has been twenty five years since the defeat of the League of Villains. Our once young cast of heroes have become fully fledged adults, and like their parents before them, they too became parents of their own children. But peace does not always last, for the actions of man will always shape the progress of the world.

On a particular day, the mad genius known as Dr. Garaki was on his final breath, in view of many of Japan's top heroes, hoping to finally see the end of All For One's influence. But before the man died, he warned them of the threat that is to come, not from the goodness of his heart, but because in spite of everything, he believed in All For One's philosophy. One last monster to unleash on the world, a monster whose whole purpose is to bring pain to his enemies, and achieve perfection.