Eun Seo

Other Name: 은서

Age: 26

Birthday: May 27, 1998

Nationality: South Korean

Gender: Female

Son Joo Yeon, also known as Eun Seo, is a member of the South Korean-Chinese girl group Cosmic Girls. Within the group, she serves as a sub-vocalist and sub-dancer. She is also part of the Joy Unit and the subunit WJSN The Black. (Source: MyDramaList).

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