Kep1er is a South Korean girl group formed through the Mnet reality competition show Girls Planet 999 in 2021 and managed by Swing Entertainment and WakeOne. The group consists of nine members: Kim Chae-hyun, Huening Bahiyyih, Choi Yu-jin, Kim Da-yeon, Seo Young-eun, Kang Ye-seo, Hikaru Ezaki, Mashiro Sakamoto, and Shen Xiaoting. They debuted on January 3, 2022, with the