Kim Ye-won  most often credited in her music career by her stage name Umji.  Born on August 19, 1998, in Incheon, South Korea. She graduated from the School of Performing Arts Seoul (SOPA) in February 2017, alongside her groupmate SinB and other idols such as Jungkook (BTS) and Eunseo (WJSN). She is a South Korean singer, songwriter, producer and rapper.   Most popularly known for having  been a member of the girl group GFriend, in which she was vocalist, rapper and the youngest member of the group.

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  In 2021, it was announced that Umji, along with former GFriend members Eunha e SinB , signed a contract with a BPM Entertainment  to debut as a trio. On October 8, 2021, it was announced that the group's new name would be  vivid . Viviz debuted on February 9, 2022, with the extended play Beam of Prism