Jisun (지선) is a South Korean singer under VINE Entertainment. She's a member of Sh#FLA and a former member of Girl's Day and New.F.O (under the stage name JN (제이엔)). Jisun originally debuted as a member of Girl's Day with the group first digital mini-album Girl's Day Party 1. Two months after the group's debut on September 12, 2010, together with Jiin, she decided to leave Girl's Day to pursue her own interests. In late 2011, she re-debuted as a member of New.F.O, under the stage name JN (제이엔) with the group's first release Bounce, shortly after their debut the group disbanded. After being announced as a member of S#aFLA, Jisun officially debuted in the group with their first single album "S#aFLA NO.1" on September 18, 2018.