|Origin||Seoul, South Korea|
Lunarsolar (stylized as LUNARSOLAR) is a four-member South Korean girl group formed by JPlanet Entertainment. The group debuted on September 2, 2020, with their single album Solar : Flare.
Before joining JPlanet Entertainment, 3 out of 4 members were previously involved in the music industry.
- Taeryeong was a contestant on Produce 101 but she was eliminated and ranked at 57th place. She also was a participant in Mix Nine but she was eliminated and placed at 46th place. She was seen performing with girl group A-Daily in October 2018, but she was never announced as an official member of the group. She was also part of ONO Entertainment's pre-debut girl group Blackmamba.
- Jian was a former member of girl group S.E.T with the stage name TaeE and participated in The Unit: Idol Rebooting Project but was eliminated and placed at 61st place.
- Yuuri was a member of Japanese girl group I'S9 in 2013, until she left (or "graduated") in November 2015.
In 2018, JPlanet Entertainment announced Rookie Planet, a project to promote their trainees (or "rookies") to the world before their official debut. They often posted dance covers, vocal covers, and reaction videos. The members were revealed within a 1 year period, starting with Jieun (who later became Jian), Taeryeong, Hyeonjeong (who later became Eseo), Yuuri, and Sujin. Sujin left sometime in early 2020. On March 27th, 2020, Jian appeared on I Can See Your Voice 7, as well as being a cover muse for YouTube channel MUPLY.
On July 13, 2020 JPlanet Entertainment announced that they would debut their first girl group and subsequently released the logo image. They released "identity photos" in the order of Jian, Yuuri, Eseo, and Taeryeong starting on July 13th, 2020 and ending on July 16th, 2020. They released 'Lunar' versions and 'Solar' versions of the identity photos.
The group debuted on September 2, 2020 with their single album Solar : Flare, alongside the music video for the title track "Oh Ya Ya Ya".
|Title||Details||Peak chart positions|
|Solar : Flare||
|Title||Year||Peak chart positions||Album|
|"Oh Ya Ya Ya"||2020||—||Solar : Flare|
|"Oh Ya Ya Ya"||2020|