[1] In 2019, Hyeonbin participated in Mnet's reality competition survival series Produce X 101, where he was eliminated on episode 11 and placed 30th rank overall.

[2][3] On October 30, 2023, Cube Entertainment announced that they planned to launch a new boy group consists of five members in first quarter of 2024.

[11] They also held a press and fan showcases at Blue Square Mastercard Hall in Hannam-dong, Yongsan District, Seoul on the afternoon and evening of the same day, respectively.

), a digital single remake of Beast's "On Rainy Days", on July 16 and Hui of Pentagon participated in the overall production of the song including writing lyrics and composing.

[14] Nowadays promoted its own genre called Days pop and targeted global fans that will permeate everyone's daily lives.