Kim Yoonsung (김윤성) is a South Korean singer. He is a former member of the boy group Kairos.
Career
2021–2022: Kairos
He debuted as a member of the boy group formed by the K-pop department at Howon University, Kairos, on September 1, 2021 with their first single "No Limit".
The group presumably disbanded sometime in early 2022.