(Y/N) (L/N) is a normal highschool boy living his life peacefully in tengu city with his best friend Itsuka Shido. (Y/N)'s peaceful life fade as he get involve with supernatural being as a result of helping his friend. (He won't have any power not even sealing ability like Shido. This story won't completely follow the original plot. Only in the early part. Non-cannon spirits include)