Choi Hyun Suk (최현석) is a South Korean rapper under YG Entertainment. He is a member of the boy group TREASURE.
In 2017, he participarted in the reality survival show MIXNINE. He ranked 5th place on the final episode, hence becoming a member of the boy group. However, the debut got cancelled.
In 2018, he participated in YG Entertainment's new survival show, YG Treasure Box. On January 25, 2019. he was announced as the seventh and final member of the boy group TREASURE.
On January 29, 2019, YGE announced that he would form a second group from the show, called MAGNUM and together with TREASURE, they would promote together as TREASURE 13. Unfortunately, due to scandals surrounding the agency, the debut was postponed.
On January 6, YGE posted a notice on their official website stating the group's future plans. This included re-organizing as a 12-member group and the integration of the two units, TREASURE and MAGNUM, into only one group named simply as TREASURE.
Hyunsuk debuted as the leader of TREASURE on August 7, 2020 with their first single album "The First Step : Chapter One".