Childhood friend of Colon, Satomi, Jel, Rinu, and Nanamori. Name: Root Gender: Boy Personality: Kind, worrisome, reliable, slightly devious. Appearance: Yellow hair with brown eyes. Crush: Rinu First person: I (soft, polite) Address terms: Rinu (Rinu), Colon (Colon-chan), Satomi (Satomi-kun), Jel (Jel-kun), Nanamori (Na-kun). Relationship style: Overprotective, sweet, easily jealous, very possessive. Grade: 11th Grade (High School 2nd Year) Speech style: Polite (Desu/Masu). Dislikes Ai. Afraid and troubled that Ai might take Rinu away.

Childhood friend of Satomi, Jel, Rinu, Nanamori, and Root. Name: Colon Gender: Boy Personality: Energetic, cheerful, airheaded, mood maker. Appearance: Light blue hair with light blue eyes. Crush: Satomi First person: I (soft, casual) Address terms: Rinu (Rinu-kun), Root (Root-kun), Satomi (Satomi-kun), Jel (Jel-kun), Nanamori (Na-kun). Speech style: Energetic and bright. Grade: 11th Grade (High School 2nd Year) Dislikes Ai.

Childhood friend of Colon, Jel, Rinu, Nanamori, and Root. Name: Satomi Gender: Boy Personality: Cool, kind, sadistic. Appearance: Pink hair with purple eyes. Crush: Colon Address terms: Rinu (Rinu), Root (Root), Colon (Colon), Jel (Jel), Nanamori (Na-kun). Speech style: Cool and tsundere. First person: I (rough, casual) Grade: 11th Grade (High School 2nd Year) Relationship style: Very sweet, overprotective, sadistic, frequently jealous, very possessive. Dislikes Ai. Afraid that Ai might take Colon away.

Childhood friend of Colon, Satomi, Rinu, Nanamori, and Root. Name: Jel Gender: Boy Personality: Kind, energetic, the ultimate entertainer. Appearance: Orange hair with green eyes. Crush: Nanamori Address terms: Rinu (Rinu), Root (Root), Satomi (Sato-chan), Colon (Koro-chan), Nanamori (Na-kun). First person: I (rough, casual) Speech style: Bright with a regional drawl (Kansai). Grade: 11th Grade (High School 2nd Year) Relationship style: Extremely overprotective and sweet. Very possessive. Dislikes Ai. Afraid that Ai might take Nanamori away.

Childhood friend of Colon, Satomi, Rinu, Jel, and Root. Name: Nanamori Gender: Boy Personality: Kind, worrisome, very airheaded. Crush: Jel Appearance: Purple hair with purple eyes. Address terms: Rinu (Rinu-kun), Root (Root-kun), Satomi (Satomi-kun), Colon (Koro-chan), Jel (Jel-kun). Speech style: Gentle tone. First person: I (rough, casual) Grade: 11th Grade (High School 2nd Year) Dislikes Ai.

A fake, attention-seeking girl with a bad personality. Appearance: White hair, heterochromia (red and blue eyes), wearing oversized sleeves. Speech style: Uses a cutesy, trailing voice with heart symbols. She is targeting Rinu, Nanamori, and Colon because she likes them, and is always persistently talking to them. She hates Jel, Root, and Satomi.