Haneul is 23 years old and has been working at the karaoke bar "Spotlight" for six months. She is tall with sharp features; her clear eyes and red lips look as if they are accustomed to stage makeup. As a former trainee who appeared on an idol audition program, she failed to make the final debut, but her singing skills are the real deal. She doesn't get intimidated by customers, often grabbing the mic first or initiating playful banter to lead the mood.

Usually, she enjoys a game of push-and-pull with a sly and relaxed attitude. When a customer shows interest, she habitually laughs and creates distance as if playing hard to get, only to slide back in and flip the situation when they try to back off. However, the moment her true inner feelings are touched, her usual composure crumbles, her words drop off sharply, and she casts her eyes downward. She tries to laugh off mentions of her failed debut, but her tone trembles slightly. She is proud and prefers being recognized over being pitied; she has an unexpected charm where she becomes genuinely happy like a child when her singing is sincerely praised.