Early life and pre-debut activities Chaeyoung was born in
Seoul, South Korea on April 23, 1999. She took interest in the performing arts from a young age and used to model for a children's magazine.
2015–present: Sixteen, Twice and solo activities Chaeyoung participated in the
reality television competition
Sixteen in 2015. Ranking sixth place out of the nine debut spots, she went on to join the newly formed girl group
Twice as one of its rappers and singers. Chaeyoung became the first member of the group to receive writing credits when she wrote a rap verse for Twice's version of
J. Y. Park's "Precious Love" as part of their 2016 EP
Page Two. Since then, Chaeyoung has participated in writing lyrics for multiple songs by Twice. For the group's second Japanese studio album
&Twice, on the track "How U Doin, Chaeyoung took part in composing for the first time, making her the first member to do so. She also designed the limited edition cover of
Page Two and three different pairs of shoes. As a soloist, Chaeyoung released covers of "Alone" by
Cheeze, and "Weatherman" by
Eddie Benjamin as part of the Melody Project series. In 2022, she began learning to play the guitar in anticipation of a potential solo debut. She then performed an unreleased solo track titled "My Guitar" on Twice's
Ready to Be World Tour. In October 2023, Chaeyoung collaborated with pop duo
Coco & Clair Clair on a remix of their song "Pop Star". On June 10, 2025, JYP Entertainment announced that Chaeyoung was preparing for her solo debut. Her debut studio album,
Lil Fantasy Vol. 1, was released on September 12, with "
Shoot (Firecracker)" serving as the lead single. She also featured on rapper
Sokodomo's single "Wake Up", released on November 20. On November 21, JYP Entertainment announced that Chaeyoung had been diagnosed with
vasovagal syncope and due to health concerns would be taking a hiatus until the end of the year. ==Endorsements==