In the Nocturnal Community Relations Division, young Arata Miyako joins a team dedicated to handling cases involving supernatural beings hidden from the human eye. Assigned to the Shinjuku Ward Office, Arata meets his colleagues Theo Himezuka and Kyouichi Sakaki. On his first mission, Arata uncovers a world where mythical creatures he believed were mere fiction actually exist, and he alone comprehends their non-human language. Meeting a Tengu who mistakes him for the renowned Abe no Seimei adds to his astonishment. Embracing his unique skill, Arata aids his team in resolving cases, gradually gaining a reputation akin to the legendary exorcist. As he delves deeper into his connection with Abe no Seimei, his inquiries lead him to confront more occult mysteries. Yet, the simplicity of his initial encounters fades as danger emerges, and his extraordinary ability poses unforeseen challenges.