Shizuka Kusanagi

As a middle school third-year student and a dedicated member of the Tea Ceremony Club alongside Yuri, this character serves as the protective younger sister to Godou. While she maintains a stern, disciplinary attitude toward him to prevent him from inheriting their grandfather's flirtatious tendencies, her strictness often masks deeper emotions. Beneath her disciplined exterior lies a potential brother complex, suggesting her rigorous oversight is actually driven by underlying jealousy.