Kouichi Aizawa

Kouichi Aizawa (相澤 虹一Aizawa Kōichi) is Rokujou's seemingly 14-year-old classmate who studies Nindō under Kumohira. Throughout the series, it is hinted that Kouichi has a romantic inclination towards Raimei Shimizu, though the girl has mentioned that Kouichi "is not her type of guy" early in the series. He is voiced by Satoshi Hino in Japanese and Chris Burnett in English.