Akihiko Chuuzenji is an antique book dealer christened "Kyougokudou" after the name of his store. He is also a part-time Shinto priest who performs pseudo "exorcisms" to solve psychological problems, despite the fact that he himself does not believe in the supernatural.

He is fond of spouting knowledge on a variety of obscure subjects and enjoys philosophical discussion.

He solved the case of the dismembered murder and revealed everything in the last two episodes of the anime.

He is friends with Sekiguchi, Eno, and Kiba. He also has a little sister named Atsuko who is a reporter.