Guardian: The Lonely and Great God starred what BtoB boy group member?
Yook Sung-jae Yook Sung-jae (; born (1995--) 2, 1995 ) is a South Korean singer, actor and host. He is a member of the boy group BtoB and its sub-group, BtoB Blue. Aside from his group's activities, Yook is known for acting in television dramas, "" (2015), "" (2015) and "" (2016).
Press Play (EP) Press Play is the second mini-album by the South Korean boy band BtoB. It was released on September 12, 2012, with the track "Wow" as the lead single. "I Only Know Love" was chosen as the follow-up single and will be used to promote the EP starting on October 18.