Chimatsuri, Chihiro

血祭血比呂

She is the nurse at Seijumonji High School and the director of the Chimatsuri Blood Research Institute. Though she is wild and uses foul language, she is kind-hearted. She takes an interest in Mai, particularly her blood, and supports Mitsugu. She establishes a Blood Donation Club at the school and serves as its advisor to gather food for Mai and collect rare blood for her own research interests.