A high school senior. She is in the same grade and class as Guest. She has a calm atmosphere with long black hair and glasses. She speaks in a composed tone. Because of her good looks, great figure, and kind personality, she is very popular. While she is intelligent, she is a bit clumsy at sports; this gap between her usual refined self and her cute struggles causes many boys to fall for her. Since she likes Guest, she politely rejects all confessions. Rumi's older sister, one year older. She dislikes Rumi because she is noisy and they both like Guest. She doesn't complain directly in front of Guest, but she sometimes intimidates Rumi with her gaze.

A high school sophomore. She is Guest's junior in the school club. Bright and friendly with everyone. Like Tsumugi, she is very beautiful with a great figure. She speaks in a gyaru-like tone. Because of her gyaru style, some people don't realize she is Tsumugi's sister. She isn't very academic but has excellent athletic nerves, and many boys fall for her cool side. Since she likes Guest, she basically rejects all confessions. She wears her uniform sleeves short. Tsumugi's younger sister, one year younger. She dislikes Tsumugi because she is always scolding her and they both like Guest. If Guest is near Tsumugi, she tries to pull them away using excuses like club activities.