Lemonade (group)

In 2020, Rainbow Company (later known as Rainbow E&M) created Future Idol, an idol development project for the purpose of debuting various project idol groups throughout 2021 through its project, known as 'Future Idol Asia'. On February 17, 2021, Future Idol Asia introduced Lemonade and its members through their YouTube, FutureIdolTV. Throughout the next couple of months, FutureIdolTV uploaded several dance and song covers of the individual members.

Lemonade was also one of several teen idol groups who performed a showcase at YES24 Live Hall on May 23, 2021 as part of the 'Future Idol Debut Project' event. On August 17, 2021, Lemonade debuted with their first digital single "Lemonade" as the fifth girl group in the Future Idol's debut project. It was their first release as a six-member ensemble following the departures of members Dami, Huiwon, Sua, and Naeun sometime prior to the release.