Seo In-guk is a South Korean actor and singer, born on October 23, 1987. He gained fame after winning the first season of the reality competition show K-pop Star in 2009. Following his victory, he debuted as a singer and released several successful albums, showcasing his vocal talent. In addition to his music career, Seo In-guk has made a name for himself in acting. He has starred in popular television dramas such as Reply 1997 and The Smile Has Left Your Eyes. His versatility in both singing and acting has earned him a dedicated fanbase in South Korea and beyond.