Woozi

On April 19, 2015, Woozi was introduced through a video teaser as one of the 13 members of Pledis Entertainment's newest boy group SEVENTEEN. The group would be introduced through the reality program Seventeen Project – The Debut Mission. On May 26, he debuted with the group with their first mini album 17 Carat.

On December 27, 2021, he announced that he would be releasing his first solo mixtape "Ruby" on January 3, 2022. On February 18, 2025, SEVENTEEN teased a new unit featuring members Hoshi and Woozi. They would be debuting as Hoshi X Woozi on March 10 with the single "Beam".