[citation needed] From June 15 to August 31, 2018, Lee represented WM Entertainment on reality girl group survival show Produce 48.

The group's debut extended play (EP) Color*Iz was released on October 29, 2018, with "La Vie en Rose" serving as its lead single.

[10] On July 11, 2021, it was announced that she would be participating in the reality TV show Street Woman Fighter as one of the Want dance crew members.

[12] In September, it was announced Lee and former Iz*One members Jo Yu-ri and Kang Hye-won would-be hosts in a new web show titled Adola Travel Agency: Cheat-ing Trip.

[13] On December 13, 2021, Lee acted alongside Kang Chan-hee in a short promotional video for Busan Tourism Organization.

[19] Despite a slow start, "Knock," the lead single off of Over the Moon, achieved a remarkable rise on South Korean music charts.