Lee Jae Jin, born in Cheongju, is a South Korean singer, actor, bassist, and member of the band F.T. Island, and part of the FT.Triple sub-unit. Lee’s older sister is actress Lee Chae Won. He made his acting debut in the 2007 KBS2 sitcom "Unstoppable Marriage". In 2009, he was cast for the main role in the musical "Sonagi".
On January 21, 2020, Lee enlisted for his mandatory military service and is expected to be discharged on August 21, 2021.
(Source: Generasia, Wikipedia)