Chung Ha

O. I, on January 29, MNH announced on March 15 that she would debut as a solo artist. On April 12, a preview film for her pre-release single titled "Week" was released, and in April 21, the music video.

|Concept photo for [[Hands on Me]] On June 7, she officially debuted with the mini album Hands on Me and its title track, "Why Don't You Know". On the same day, she held her showcase. On January 17, she released her second mini album, titled Offset, along with the title track "Roller Coaster".

In music shows, she promoted the track "Offset" as well. Five months later, on July 18, 2018, she released her third mini album, titled Blooming Blue. |Concept photo for "[[Gotta Go (Chung Ha)|Gotta Go"]] On January 2, she released her first single album, titled "Gotta Go".

|Concept photo for [[Flourishing]] On June 24, her fourth mini album Flourishing was released with "Snapping" as its title track. "Chica" was also used during promotions. On January 21, Chung Ha and Paul Kim released the collaboration single "Loveship".

On February 29, she released the single "Everybody Has" as the second release of MNH's 2020 music project New. wav. |Concept photo for "[[Stay Tonight"]] On April 17, a timetable was revealed for Chung Ha's first pre-release single for her upcoming first full-length album.

The single titled "Stay Tonight" was released on April 27. On May 30, Chung Ha released the single "My Friend" as part of a collaboration for Zion. T's reality show Song Farm!.

On June 9, the single "Be Yourself" was released as part of New. wav and in collaboration with Sprite. |Concept photo for "[[Play (Chung Ha)|Play"]] On July 6, "Play" was released as the second pre-release single.

On November 18, three teaser videos were released with the caption "COMING SOON" for November, December, and January. The following day, teaser images were released announcing the release of "Dream of You" and "X" on November 27 and December 10, respectively. It was also confirmed that Chung Ha would be releasing her first full-length album, Querencia on January 4, 2021.

On November 27, her collaboration single "Dream of You", with DJ and producer , was released as her third pre-release single. On December 9, MNH announced that the release of her upcoming fourth pre-release single and first album would be postponed following her positive COVID-19 diagnosis on the 7th. On January 11, the new release dates for the pre-release single and first album were revealed.

|Concept photo for [[Bare&Rare]] On June 27, a scheduler was posted which revealed that Chung Ha would be releasing part 1 of her second studio album, Bare&Rare, on July 11. On January 30, Sports World reported that Chung Ha would be leaving MNH Entertainment in March following her contract expiration. On March 29, it was announced that Chung Ha's contract with MNH Entertainment will conclude on April 29 after deciding not to renew.

Additionally, the agency revealed that "due to internal circumstances", they would not be releasing the second part of her second full-length before her departure. On April 29, Chung Ha shared a handwritten letter to her fans following the expiration of her contract, and stated that she would still be releasing Part 2 of her second full-length album if the opportunity arises. On September 22, Chung Ha was announced as the new DJ of KBS CoolFM's Volume Up, now titled Chungha’s Volume Up.

She succeeded Heize, who hosted the radio show for a year before stepping down on September 3. On Octo...