Chihiro Chimatsuri

Blood type: Unknown

A beautiful lady who is the Seijumonji High School nurse and the Chimatsuri Blood Research Institute director. Although she is wild and has a potty mouth, she is kind at heart. She becomes interested in Mai (especially her blood) and supports Mitsugu. She creates a Blood Donation Club at school and becomes its advisor to gather food for Mai and collect rare blood to pursue her own interest.

(Source: Official Website)