Seo In-guk first appeared on screen in season one of Mnet’s K-pop audition program “Superstar K,” in 2009. He won and officially debuted as a singer a few months later through the EP “Calling.” He has since released 15 singles and albums, including hits such as “Everlasting Love,” (2014) and “Shake it Up,” (2011). Seo debuted as an actor in 2012 through a supporting role in the KBS romance series “Love Rain,” which also starred actors Jang Keun-suk and Im Yoon-ah. His breakthrough work as an actor came in 2012 when he appeared as a lead in tvN’s coming-of-age teen romance series “Reply 1997,” alongside actor-singer Jung Eun-ji. Seo is also known for his work in SBS’s “Shopaholic Louis,” (2016) and mystery drama “Cafe Minamdang,” (2022). Seo has also appeared in the jukebox musical “Gwanghwamun Sonata,” in 2012.