In a world where magic is an everyday occurrence, Ikuta Kouki is scorned for his unique constitution, which leaves him with zero magical power. Meanwhile, a great magician predicts the arrival of the “end of the world” and the existence of seven saviors who will save it. People worship the saviors, who gain power and control everyone. However, five years later, when the end of the world actually arrives, the saviors are completely powerless. Seeing a glimpse of power in Kouki’s despair, his dying sister musters her last bit of strength and uses the forbidden magic “Return.” Kouki is told, “I want you to save the world,” and when he awakens, he finds himself in a world five years in the past. In order to save the people who still believe in the “false savior,” Kouki uses the awakened magic “Creation” to rise up and save the world as the true savior.