Tochi Kami-sama no Sono Higurashi: Isekai kara Kaettekita Shinkan no Chotto Fushigi na Honobono Gendai Life

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, Kosei’s divine energy is no longer human in scale, and the onmyoji begin treating him as a living God. Source: MU