Chihiro Chimatsuri

Serving as both the Seijumonji High School nurse and the director of the Chimatsuri Blood Research Institute, this striking woman balances a fierce, foul-mouthed personality with a deeply compassionate soul. Driven by a fascination with Mai’s unique blood, she establishes and advises the school's Blood Donation Club to secure rare samples for her research. While pursuing her scientific interests, she remains a dedicated supporter of Mitsugu, blending her wild nature with a protective, nurturing instinct.