Berry Good debuted on May 21, 2014, with the music video for "Love Letter", a remake of the song released by Click-B in 2000.

[5] In January 2015, Asia Bridge Entertainment stated that Subin, Iera and Nayeon had left the group to concentrate on their studies,[6] and introduced new member Seoyul,[7][8] followed by Daye and Sehyung.

[24] The project started on September 1 as a new single, but it was later upgraded to a mini album,[25][26] and ended raising ₩26,896,790, 268.97% of its original 10-million goal.

[27] Three out of four songs from the EP, including the lead track "Don't Believe", were showcased on Arirang Radio's K-poppin' one day before their release.

[28] The official music video for "Don't Believe", and the group's second mini album Glory, were released on November 1.

[29] A third Makestar project was launched on March 9, 2017[30] to finance their sixth digital single Bibbidi Bobbidi Boo.

[32] On June 9, they performed three songs at the Thống Nhất Stadium of Ho Chi Minh City, Vietnam.

serving as the title track, as a five-member group, with Daye resting due to health issues.

To promote "Don't Believe" in November 2016, Berry Good underwent a change of styling and concept to take off the original girlish, neat and pure image,[55] adding EDM and tropical house elements to their music.