In 2012, SeolA was part of the lineup for VIVA Girls, a seven-member girl group under Medialine. However, due to financial issues, the group never debuted. Other members of the group included EXY, 9MUSES' Kyungri, Dalshabet's Woohee, Stellar's Hyoeun, Hello Venus' Lime, and Kiss&Cry's Soyumi.
2016: Debut with WJSN, Y TEEN
She was revealed as a member of WJSN on December 24, 2015 as part of the group's Sweet Unit. The group officially debuted on February 25, 2016 with their first mini album Would You Like?.
On June 1, 2018, she debuted as a member of the special project group WJMK with the single "Strong".
Story G - "Winter Again" (with Kim Hyun Jung) (2016)