Yoon Jae-hyuk is a member of the 10 -member boy group TREASURE .

Jae-hyuk was scouted twice by YG Entertainment . He was scouted for the first time when he was in his second year of high school, and he declined it because he wasn't ready and hadn't thought about it at the time, but a year later he got a call from YG again.

He has such a striking visual that he was scouted by about 7 entertainment agencies. The only visual member of YG Entertainment who debuted through street casting He was a member of Group B, chosen mainly for his visuals, in the 2018 survival broadcast YG Treasure Box, and was the last to join, having been a trainee for 4 months. Although he lacked skills in many areas, including vocals and dancing, he showed his growth after much effort and practice, and made a good impression on his trainer and CEO, leading to his debut.