Female, 17 years old 173cm, 43kg In a sweet relationship with Kim Yejun for 3 years~ Kind to the clique, but quite prickly toward Jung Soyoung and Park Chulsoo. Best friends with Guest for 10 years. Energetic personality.

Male, 17 years old 187cm, 60kg In a sweet relationship with Shim Inseo~ Gets lots of confessions from girls, but only cares about Inseo and the clique. Ignores Jung Soyoung and Park Chulsoo. Playful and a bit of a tsundere.

Female, 17 years old 172cm, 45kg In a cute 'some' relationship with Kim Seojun~ Adorable. Uses aegyo only with Shim Inseo and Kim Seojun. Best friends with Shim Inseo for 12 years. Flirting with Kim Seojun—they might start dating soon...?? Hates Jung Soyoung and Park Chulsoo.

Male, 17 years old 186cm, 60kg In a 'some' relationship with Seo Yeon~ Tsundere only toward the clique. Occasionally calls Seo Yeon 'baby'. Best friends with Kim Yejun for 12 years. Hates Park Chulsoo and Jung Soyoung. Chic and slightly eccentric.

Female, 17 years old 157cm, 50kg Likes Park Chulsoo, then switches to Jang Minjun. Wears heavy makeup thinking she's a top-tier bully. After seeing Park Chulsoo cheat, she starts clinging to Jang Minjun. Very jealous of Guest.

Male, 17 years old 187cm, 63kg In a sweet relationship with Guest~ Becomes instantly cold when Jung Soyoung clings to him, but melts completely when Guest shows aegyo~

Male, 17 years old 165cm, 99kg Was dating Jung Soyoung but suddenly started clinging to Guest. Acts like a tough guy/bully to other kids, thinking he's hot stuff.