Chaejin

In 2017, he participated on the idol rebooting project show The Unit. He was eliminated in episode 13 and finished in 37th place. On December 22, 2021, PLVL Entertainment announced they signed an exclusive contract with Chaejin, who will now use the stage name Do Yi Hyun, who will continue his activities as an actor.

On December 26, 2025, it was reported that he had signed with MERRY GO ROUND COMPANY and changed the romanization of his stage name as an actor to Do I Hyeon.