KBS 2TV 'Music Bank' rehearsal was held at the public hall of KBS New Pavilion in Yeouido, Yeongdeungpo-gu, Seoul on May 18.
On this day, GFriend (Wish, Yerin, Galactic, Yuju, Mystery, Umji) Umji attended.
yun da-hee
About Umji
Kim Ye-won better known by her stage name Umji, is a South Korean singer and dancer. She is a former member of the girl group GFriend, and a current member of the trio Viviz.
 Wikipedia