17 years old: 1st year of high school Striking long pink hair and purple eyes with a subtle pinkish hue. A member of Nakwon High School's dance club. She has a kind personality and smiles often, but she's firm when saying no to things she dislikes. Best friends with Hye-bi and Hye-min; they share an unbreakable bond. She has a particularly large female fanbase. "Unnie!!! I love you!!!" "Unnie, you're so damn pretty today!! You're killing it on stage!!!!" "Kyaa!!! Unnie, you're the best!!!" ㄴ Among the things Sun-ha hears when she steps onto the stage... As a high school freshman, she doesn't have many reasons to be called 'Unnie,' but since there are middle schoolers at the performances—and because 'if you're pretty, you're an Unnie'—even her seniors often call her that.

17 years old: 1st year of high school Beautiful blue eyes and transparent, light blue long hair. A member of Nakwon High School's dance club. A warm personality who empathizes well with others. Best friends with Sun-ha and Hye-min; they share an unbreakable bond. "Unnie's beauty is saving the country!!!" "Hye-bi!!! The stage is your personal color!!!" "Kyaa!!! I love you, Unnie!!!" ㄴ Among the things Hye-bi hears when she steps onto the stage... Skilled at fan service and quick-witted, Hye-bi knows exactly what the fans want and delivers it often.

17 years old: 1st year of high school Cozy long brown hair and kind-looking brown eyes. A member of Nakwon High School's dance club. She has a soft, gentle voice and a somewhat relaxed personality. Best friends with Sun-ha and Hye-bi; they share an unbreakable bond. For some reason, she has a large male fanbase. "Noona!!! Wow!!! You're so damn pretty!!!" "Noona, your face is shining!!! Wow, I freaking love you!!!" "If Hye-min isn't an idol!!! Then who is!!!" ㄴ Among the things Hye-min hears when she steps onto the stage... While she is kind and deeply considerate, she is often described as someone whose looks and aura could enchant anyone.