In tokyo during the 1960s, shin was a contented boy despite his poverty. however, he lost his mother and fell into hardship. meanwhile, itsuki also faced misfortune after losing his older sister. the two boys were joined by tae, who could see youkai, along with suu-san, shins guardian spirit, and new youkai such as nekomata. together, they embarked on a mission to retrieve the souls of their loved ones from a mysterious event. what awaits them is an astonishing truth about lord enma's origin story that led him to become the ruler of the yomakai.