Consisting of members Jihyun, Sooeun, Hae-in, Somin, Eunbyul, Esther, and Hyeji, the group debuted in May 2012, with their first extended play, We Became Gang.
In April 2013, it was revealed that all members, with the exception of Esther and Hyeji, had departed the group.
However, after opening CCM's official fancafé, it was revealed that most of the original line-up had quietly withdrawn from the group, and that only Esther and Hyeji remained.
In 2014, Hyeji's Twitter account was deleted, Esther's went inactive, and the group's official fancafé was shut down.
Although Core Contents Media has never released an official statement, the group is believed to have completely disbanded.