Lee Seok Min, known by the stage name DK, is a South Korean musical actor and member of the Korean boy group Seventeen (세븐틴) under Pledis Entertainment (플레디스 엔터테인먼트). He's also the leader of the special sub-unit BSS (부석순) formed in 2018. He made his musical acting debut in 2019 after landing the lead role of King Arthur in the musical "Xcalibur." (Source: MyDramaList) Watch drama online for free.