Silhouette (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 and 2022 through its project, known as 'Future Idol Asia'. While pre-debut, Silhouette was 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 December 23, 2021, Silhouette revealed the teaser for their debut digital single, "Siren", which was released on January 7, 2022.