Kim Jae-joong is a South Korean singer, songwriter, and actor, born on January 26, 1986. He first gained fame as a member of the popular boy band TVXQ, which debuted in 2003. After leaving the group, he continued his career in music and formed the trio JYJ with former bandmates. In addition to his music career, Kim Jae-joong has appeared in various television dramas and films, showcasing his acting skills. He is known for his roles in series like Protect the Boss and Triangle. His diverse talents have made him a prominent figure in the South Korean entertainment industry.