In a world where magic is commonplace, Ikuta Kouki was scorned due to his peculiar constitution: Zero Magic Power . Amidst this, a Great Sorcerer predicted the arrival of the “End of the World” and the existence of seven Saviors to rescue humanity. These “Saviors” became worshipped, gained authority, and began to rule over the people. However, five years later, when the End of the World actually arrived, the promised Saviors proved to be completely powerless . In a moment of despair, Kouki’s dying older sister sees a glimpse of latent power within him. She uses her last ounce of strength to cast the forbidden spell, “Regression.” After telling him, “I want you to save the world,” Kouki awakens to find himself back in the world of five years ago, where people still believe in the “False Saviors.” Now, Kouki rises up, using his newly awakened skill, “Creation,” to become the true Savior, rescue the people who have been misled, and save the world from its predetermined doom.