Since he was 10 years old, Seo In Guk dreamed about becoming a singer. But he got rejected a lot of times, being told to improve and lose weight. After being discouraged like this, In Guk started to suffer from bulimia. But he never gave up completely and eventually joined the talent show 'Superstar K' in 2009. He won the first season and was finally where he wanted to be. Aiming to take another challenge, In Guk made his acting debut in the drama 'Love Rain' in 2012.