Chizuru is a carefree second year female student at Kouta's school. She appears to be a normal, teenage girl, but she is in fact a 400-year-old powerful kitsune. When she changes form, her hair goes from black to blond and she gains fox ears and a tail. She is constantly hanging around and on Kouta, as he is the only male she acts genuinely towards. She loves Kouta very much and wants to enter a "relationship of sin" with him. She is a very straightforward person and makes almost constant sexual suggestions and actions toward Kouta.
- Transformation: Chizuru can shift between her human and kitsune form at will. She is shown to be more powerful in "true" form than in her human form.
- Kitsune Physiology: Being from a bloodline of powerful kitsunes she can transform to reach her full power and strength.
- Fox-Fire: Chizuru can emit powerful blue fox flames.
- Fusion: Chizuru has shown to be able to physically merge with Kouta by kissing to become more powerful. During this she enters his body and gains the ability to use her 5-tailed kitsune powers.