Stage name Jeewon, she was the leader and face of the all-female K-pop group Cignature. She was also a lead vocalist for the band which debuted with a single called "Nun Nu Nan Na."
She previously trained with BlockBerry Creative. She was previously a member of a band called GOOD DAY.
She was a model for an online fashion shopping portal called Sonyunara. She participated on the survival series The Unit.
She was born in Busan, South Korea.
After she was introduced as the leader of Cignature, the second member to be revealed was Goo Se Mi.