Kahi is a signer/dancer signed to Pledis Entertainment and is the leader of the popular girl group After School. Kahi began dancing at the age of 16 which started her dream of becoming a singer. But decided not to persue it because her parents were against her career choice. She eventually went against her parents and ran away from school and home to pursue her dream as an performer. Over the years she work her way up in the entertainment field and was a backup dancer for many famous muscians like BoA, Lexy, 1TYM, and many more. After many years, she formed and selected the members of After School and debuted in 2009 and has been the leader ever since.