From October 2016 until June 2018, each member of the group was revealed along with a solo single album and a music video for the title track. The complete group debuted on August 19, 2018 after holding their debut concert, LOONAbirth. They held their first comeback with [X X].
HeeJin (Hangul: 희진), born as Jeon Hee-Jin (전희진) is the first member of the girl group LOONA.
Born on October 19, 2000 in Bundang District, Seongnam, Gyeonggi Province, South Korea, she was revealed as the first member on September 26, 2016, and later officially released her solo single "HeeJin" with lead song "ViViD" on October 5, 2016.
|10||Album Reissues (HaSeul, Kim Lip)|
|12||M Countdown Broadcast 🏆||6PM|
|13||Frequency of the Moon Ep 16 (LOONA 1/3: HeeJin, HyunJin, ViVi)||9PM|
|15||SBS Inkigayo Broadcast (end of [#] promotions)||3:50PM|
|17||Olivia Hye reveal anniversary|
|26||Frequency of the Moon Ep 17 (ODD EYE CIRCLE: Kim Lip, JinSoul, Choerry)|
|30||Olivia Hye release anniversary|
|13||Album Reissues (ViVi)|
|14||Album Reissues (HyunJin, YeoJin, Mix & Match)|
|16||Album Reissues (Love & Live, Love & Evil)|
|17||ViVi release anniversary|