Superstar K
Seo In-guk (; born October 23, 1987) is a South Korean singer-songwriter and actor. He launched his singing career after winning the talent reality show "Superstar K" in 2009, and made his acting breakthrough in "Reply 1997" (2012). Since then, he has starred in television series "High School King of Savvy" (2014), "Hello Monster" (2015), "Squad 38" (2016), "Shopping King Louie" (2016) and "The Smile Has Left Your Eyes" (2018).