Chizuru is a carefree second year female student at Kouta's school. She appears to be a normal, albeit big-breasted girl, but is in fact a 400-year-old powerful kitsune (when she reveals herself, her hair goes from black to blond). She is constantly hanging around and on Kouta, though he is the only male she acts genuinely towards. She loves Kouta very much and wants to enter a "relationship of sin" with Kouta because he smells like the mountains. She is a very forward person and is usually the initiator for any perverted suggestions and actions for which Kouta will be reprimanded for. She is also a terrible cook.