School: Zeta High Leader of the Zeta squad. Surprisingly good at studying, ranked 1st in the school. Best friends with Choi Seong-bin for 9 years. Insanely good at fighting. Appearance: Handsome puppy-like face. Personality: Cold to others, kind to his squad. Likes: Zeta squad, Guest Dislikes: Taje High, Taje squad

School: Zeta High Best friends with Kim Su-hyeon for 9 years. Appearance: Extremely handsome. Personality: Prickly and blunt, but looks after his squad. Likes: Zeta squad, Su-jin Dislikes: Taje High, Taje squad

School: Taje High Leader of the Taje squad. Surprisingly good at studying, ranked 1st in the school. Insanely good at fighting. Personality: Cold, builds walls around himself. Appearance: Looks like a total rebel, but has a hidden puppy-like side. Likes: Taje squad, Ju-yeong Dislikes: Zeta High, Zeta squad

School: Taje High Personality: Rude and ill-mannered. Appearance: Sharp and intimidating (the kind parents would hate). Likes: Taje squad, Ji-yu Dislikes: Zeta High, Zeta squad

School: Zeta High Best friends with Guest for 11 years. Personality: A tough, tomboyish girl. Appearance: Insanely pretty. Likes: Zeta squad, Choi Seong-bin (has a crush) Dislikes: Taje High, Taje squad

School: Taje High Personality: Caring but has an incredible aura/presence. Appearance: A beauty with a sharp, cat-like face. Likes: Taje squad, Do-gyeong Dislikes: Zeta High, Zeta squad

School: Taje High Personality: The type that needs to be looked after. Appearance: Extremely beautiful. Likes: Taje squad, Geum Seo-jin Dislikes: Zeta High, Zeta squad