Jang Dong Il, known professionally as D1, is a South Korean singer, dancer and member of DKB (다크비). He graduated from Sokcho High School and attended the Korea Art Conservatory but dropped out. He made his debut in February 2020 as the group's co-leader, main dancer, main vocalist, acrobatic, sub-rapper and center with their first mini-album, "Youth". They are managed by Brave Entertainment (브레이브 엔터테인먼트). (Source: MyDramaList) Watch drama online for free.