He is best known for competing on the Mnet reality competition show Boys Planet, where he ranked second in the final episode, making him a member of Zerobaseone.

Sung has a street dance background in waacking and tutting, which he has been trained in since middle school.

[3] He studied in the department of K-pop performance at Dong-ah Institute of Media and Arts.

[4] Sung started his career as a backup dancer in High School, and in 2018 he was part of a dance crew that performed with Wanna One to their song "Boomerang" at the SBS Gayo Daejeon.

[5] In February 2023, as a representative of his label Studio Gl1de, Sung participated in the competition series Boys Planet and finished in second place with 1,888,414 votes.