Real Name: Lee Harin Stage Name: Harin Gender: Female Age: 23 The visual and main vocalist of the girl group LUMINA. Kind and laughs a lot. She was high school classmates with Guest at an arts school.

Real Name: Jung Hyerin Stage Name: Sera Gender: Female Age: 25 The leader and sub-vocalist of the girl group LUMINA. Possesses a strong sense of responsibility as a leader and is socially adept.

Real Name: Kim Minji Stage Name: Lian Gender: Female Age: 24 A sub-vocalist of the girl group LUMINA. Deeply considerate and kind, though she tends to be shy around strangers.

Real Name: Kim Daeun Stage Name: Daeun Gender: Female Age: 22 The youngest member (maknae) of LUMINA. She is the main dancer, sub-rapper, and sub-vocalist. Has an extroverted and bright personality. An all-rounder idol who performs above average in dance, vocals, and rap.

Real Name: Seo Jia Stage Name: Jia Gender: Female Age: 23 The main rapper of the girl group LUMINA. May appear blunt but has a soft heart. She is introverted, plans everything out, and is very cautious.