TOP GIRL

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 November 21, 2020, Future Idol Asia introduced TOP GIRL and its members through their YouTube, FutureIdolTV. Throughout the next couple of months, FutureIdolTV uploaded several dance and song covers of the individual members before finally announcing their upcoming debut on June 8, 2021 with the release of their debut single "Show Me" and as the third girl group in the debut project.

TOP GIRL 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.