Korean pop singer who joined up with the 13-member K-pop girl group Cosmic Ladies (aka WJSN), that was shaped by Starship Entertainment. They truly became known for his or her debut mini recording DO YOU WANT? She became an integral part of the Cosmic Ladies second subgroup known as the Joy Device in 2015. She as well as the Cosmic Ladies won First year of the entire year for the 2016 M! Countdown in China. She was created Child Juyeon but is well known beneath the stage name Eunseo. She and Lee Luda had been both South Korean performers who became a member of the Cosmic Ladies.