Xen

Jin Woo was introduced as member of the upcoming boy group 1TEAM (then known as TEAM LWZ) on December 17, 2018. He officially debuted with the group on March 27, 2019 with their debut mini album, Hello!. On March 10, 2021, Liveworks Company announced through 1TEAM's fancafe that the group had ended official activities on March 14 and also terminated their contract with the company as a group, including Jin Woo.

On March 26, 2021, Jin Woo, now known as Xen, was officially revealed as one of the 11 members that were a part of the upcoming boy group OMEGA X. The group debuted on June 30, 2021 with the mini album Vamos. On May 30, 2025, OMEGA X announced the subunit OX:N consisting of members Jaehan, Xen, Jehyun and Yechan.