Haeyoon was previously introduced as one of the female trainees to represent FNC Entertainment on the Mnet survival show, Produce 48 in 2018.

[4] Jiwon auditioned for the first season of SBS' K-pop Star with the song "Because of You" by Kelly Clarkson and later became a trainee under Starship Entertainment.

[5] Remi was a trainee with Avex Proworks and first appeared in the live-action segments of Pretty Rhythm: Dear My Future in 2012 as one of the Prism Mates but did not pass the audition to become an official member.

[8] The group's debut reality show Insider Channel Cherry Bullet premiered on November 28, 2018, on Mnet.

[11][12] On December 13, 2019, FNC announced that Mirae, Kokoro, and Linlin had left the group and terminated their contracts for personal reasons.

[19] Bora, Jiwon, and May took part in the Mnet survival show Girls Planet 999, which aired from August 6, 2021, to October 22, 2021.

[22] On May 18, 2023, it was announced that members Bora, Jiwon, and Chaerin would be participating in the Mnet survival show Queendom Puzzle.

[24][25] On April 22, 2024, FNC Entertainment announced that the group had officially disbanded after members Haeyoon, Jiwon, Remi, and May terminated their exclusive contracts with the agency.