[3][4] On May 2, 2018, Starship Entertainment and Fantagio collaborated to form a special four-member unit named WJMK, consisting of members of their respective girl groups WJSN and Weki Meki.

[7] Luda released her first solo single, titled "Dreamland", as part of the official soundtrack for Dunia: Into a New World.

[8][9][10][11] On September 23, 2020, announced the formation of the new sub-unit WJSN Chocome, featuring members Luda, Dayoung, Soobin, and Yeoreum.

[12][13][14] On September 19, 2022, Starship Entertainment announced that Luda will make her acting debut in the web drama My 20th Twenty, which was released on April 21, 2023.

[15] On March 3, 2023, Starship Entertainment announced that Luda had chosen not to renew her contract with the label, however it was stated that she haven't left the group.