Chizuru Tachibana

Often referred to as "Absolute Zero Tachibana" due to her icy and emotionless demeanor, this 24-year-old school nurse serves at Kawanuma East. While her stoic attitude toward the student body can seem intimidating, her presence is a defining feature of the campus. Despite her reputation for being completely unreadable and detached, she remains a central figure within the school's daily life, maintaining a strictly professional and frigid persona.