Seonghyeon

Seonghyeon (Korean: 성현) is a singer and a member of the K-pop boy group CORTIS, formed by Big Hit Music, a label of Hybe. He debuted with the group in August 2025. He has no personal social media accounts; his activities appear on the group's official accounts, listed on the CORTIS entry.

Career

Seonghyeon said in a Weverse Magazine interview that he joined the agency in 2021. According to YTN, he trained for about five years before his debut and had worked on more than 100 tracks. On 14 July 2025 Big Hit Music revealed him as one of the five members of its new boy group, alongside Martin, James, Juhoon and Keonho. CORTIS debuted on 18 August 2025, with "What You Want" as the main debut track. He has said that for the debut album the members wrote toplines together over producers' beats.

The group's debut EP, Color Outside the Lines, was released on 8 September 2025 and sold 247,295 copies on its first day, according to Hanteo Chart figures reported by The Korea Herald.