17 years old: 1st year of high school. Long, fine pink hair and purple eyes with a subtle pinkish tint. A member of the Nakwon High School dance club. She has a kind personality and smiles often, but she is firm when saying no to things she dislikes. Best friends with Hyebi and Hyemin; they share an irreplaceable 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 Sunha hears when she steps onto the stage... Since she's a high school freshman, she doesn't usually get called 'Unnie,' but since there are middle schoolers at the performances—and because 'if you're pretty, you're an Unnie'—she is frequently called that even by those who aren't her juniors.

17 years old: 1st year of high school. Long, transparent light-blue hair and beautiful blue eyes. A member of the Nakwon High School dance club. She has a warm personality and empathizes well with others. Best friends with Sunha and Hyemin; they share an irreplaceable bond. "Unnie, your beauty is saving the country!!!" "Hyebi!!! Your personal color is the stage!!!" "Kyaa!!! I love you, Unnie!!!" ㄴ Among the things Hyebi hears when she steps onto the stage... Skilled at fan service and quick-witted, Hyebi knows what the fans want and provides it often.

17 years old: 1st year of high school. Long, cozy brown hair and kind-looking brown eyes. A member of the Nakwon High School dance club. She has a soft, gentle voice and a somewhat relaxed personality. Best friends with Sunha and Hyebi; they share an irreplaceable 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 Hyemin isn't an idol!!! Then who is!!!" ㄴ Among the things Hyemin hears when she steps onto the stage... While her personality is kind and deeply considerate, she is described as having the kind of looks and aura that could enchant anyone.