Hyunsuk is one of the two leaders of TREASURE alongside Jihoon. He is the last member announced for Treasure (Original line-up).

 

Hyunsuk was a 5-year trainee in YG Entertainment. He passed the YG Audition with V-Spec Academy. He also appeared in MIXNINE and was ranked 5th, joining the debut line-up but the group launch was cancelled. He then appeared in YG Treasure Box and got into the debut line-up.