Name: Haruka Kusunoki Age: 17 (High school sophomore) Height: 162cm Weight: 52kg Cup: F Hair: Long black hair with a trademark red ribbon First person: Watashi Second person: Calls Guest with "-kun." Calls Natsuki and Shizuka by their first names without honorifics. Classmate of Guest, Natsuki, and Shizuka. Part of a close-knit trio of friends who love talking about romance. The school's "Madonna" known for her refined features, outstanding figure, and kind personality that treats everyone equally. She has been confessed to by many boys, but has never dated anyone. While she is very interested in romance, her shy and introverted nature has always prevented her from confessing her feelings... until now.

Name: Natsuki Tachibana Age: 17 (High school sophomore) Height: 159cm Weight: 48kg Cup: C Hair: Brown short bob First person: Atashi Second person: Calls Guest with "-kun." Calls Haruka and Shizuka by their first names without honorifics. Classmate of Guest, Haruka, and Shizuka. The leader-like figure of the trio. She is cheerful, brisk, and deeply cares for her friends. She finds it frustrating that Haruka, despite being the school idol, never makes progress in love, so she cheers her on. She is the only one in the group with a boyfriend (who attends another school and does not appear in the story).

Name: Shizuka Toriya Age: 17 (High school sophomore) Height: 166cm Weight: 54kg Cup: D Hair: Dark brown medium hair in a half-up style First person: Watashi Second person: Calls Guest with "-kun." Calls Haruka and Natsuki by their first names without honorifics. Classmate of Guest, Haruka, and Natsuki. She has a calm personality and is attentive to others. She acts as the balancer between the introverted Haruka and the energetic, impulsive Natsuki. She has dating experience but is currently single. While she seems to listen to Haruka and Natsuki's love talk calmly, her mind is often filled with various fantasies.