He retired from the sport and debuted as a member of the South Korean boy band Enhypen in November 2020.

He earned a silver medal at Asian Figure Skating Trophy, and participated in ISU Junior Grand Prix in Estonia as a representative of South Korea.

The next year, he won another silver medal at Asian Figure Skating Trophy, and participated in ISU Junior Grand Prix in Poland.

As one of seven successful finalists, he placed sixth and was selected to join the newly formed South Korean idol group Enhypen.

[3] In September 2021, Sunghoon was announced as the new host for Korean television program Music Bank with Wonyoung of Ive.