Yoon Ji Sung is a South Korean singer and actor under DG Entertainment. In 2017 he survived Mnet’s “Produce 101 Season 2“ as a trainee of MMO Entertainment. He was placed 8th in the show and qualified to be a member of the boy group WannaOne debuted during Wanna One Premier Show-Con on August 7, 2017, and had a contract until December 31, 2018, when the group officially disbanded. He also appeared with the group until its final concert series, Therefore, held at the Gocheok Sky Dome from January 24 to 27, 2019. He's currently promoting as a solo artist and he made his debut with his album "Aside" on February 20, 2019. He enlisted on May 14, 2019, and was discharged on November 20, 2020. He released his second EP Temperature of Love on April 15, 2021. He released his third EP Maze on April 27, 2022. He made his acting debut through SBS's drama Let Me Be Your Knight in 2021. Watch drama online for free.