Wanna One Yoon Ji-sung has a photo time at the KBS 'Music Bank' rehearsal held at the KBS New Hall in Yeouido-dong, Seoul on the 7th.
About Yoon Ji-sung
Yoon Ji-sung is a South Korean singer and actor. He is best known for finishing eighth in the second series of Produce 101 and is the former leader of South Korean boy group Wanna One.
 Wikipedia