Jaeyoon (재윤)

Lee Jae-yoon, known professionally as Jaeyoon, is a South Korean singer and actor who has been a member of FNC Entertainment's boy group SF9 since the group's formation. Within SF9 he serves as a sub-vocalist, and he additionally appeared as lead vocalist for IT'S ONE, a unit assembled during the *Kingdom* survival competition series. He has also pursued acting alongside his group activities.

No further detail — solo releases, chart figures, awards, or acting credits — is available in the sourced material and none will be added here.