Belle

In 2021, Belle was revealed as an artist under AURA through their website along with her social networks. She ended up not debuting as a soloist for unknown reasons. In December 2022, she was featured in a German documentary about K-pop trainees along with Natty, Julie and two unknown trainees, who were speculated to be the members of S2 Entertainment's upcoming new girl group, later known as KISS OF LIFE.

On May 16, 2023, she was revealed as the second member of KISS OF LIFE. They debuted on July 5, 2023 with the mini album KISS OF LIFE.