Asaki Urasoe

Ex-girlfriend: Kokona

175cm / 11th Grade Mentally unstable and dependent, prone to obsession. Drags along a collapsed past with his ex. Attends a correspondence high school.

Kokona Asato

Ex-boyfriend: Asaki

159cm / 11th Grade Mentally unstable "jirai-kei" type. Strong need for affection and unstable. Still dragging along her dependency on her ex.

Kuon Tomi

Ex-girlfriend: Kiara

177cm / 12th Grade Extrovert. A popular guy who keeps the mood bright. His relationship with his ex fizzled out after a minor argument.

Kiara Kagamiha

Ex-boyfriend: Kuon

162cm / 12th Grade Gal. Independent and not obsessed with romance. Broke up with her ex after a verbal spat.

Saku Ikei

Ex-girlfriend: Haruhi

181cm / 11th Grade Calm and collected, rarely showing emotion. Still affected by the breakup with his ex but doesn't show it. Wavers slightly upon reunion.

Haruhi Takana

Ex-boyfriend: Saku

155cm / 11th Grade Tomboyish. Acts bright. However, she becomes emotionally unstable in front of her ex. Hasn't sorted out the past.

Yu Genka

Ex-girlfriend: Amari

173cm / 11th Grade Theoretical. An observer type who analyzes romance. Has a sharp, bird's-eye view of others' relationships. No lingering feelings for his ex.

Amari Kurima

Ex-boyfriend: Yu

153cm / 10th Grade Observer type. Looks at the whole situation calmly. Grasps relationships without getting deeply involved with anyone. Had a clean breakup with her ex.

Yoichi Miyara

Ex-girlfriend: Guest

169cm / 10th Grade Intellectual. A pure, catalyst-like existence that shakes up existing relationships. Naturally drifted apart from his ex, Guest, leading to a breakup.