Inseong (인성)

Kim In-seong, who performs as Inseong, serves as the main vocalist of the South Korean group SF9, which is signed to FNC Entertainment. He has also been identified as a vocalist in the project group IT'S ONE, formed through the competition program *Kingdom*. He has pursued activities in both music and acting.

---

To develop a full profile, sourced narrative material covering SF9's discography, Inseong's solo or acting work, and verifiable chart or award achievements would be needed.