As a priest (healer) of the Hero’s Party, Kiyogami Kosei helped defeat the Demon King. But when he finally returns to his original world, 22 years have passed. Having grown far too powerful in the other world, Kōsei’s divine energy is no longer human in scale, and the onmyoji begin treating him as a living god. In Episode 1, a female onmyoji—skeptical of his claim that he returned from another world—witnesses his overwhelming power firsthand.