YS
Yook Sung-Jae

Yook Sung-Jae

Yook Sung-jae, also known mononymously as Sungjae, is a South Korean singer, songwriter, actor, host and entertainer. He is a member of the boy group BtoB and its sub-group, BtoB Blue. Aside from his group's activities, Yook has acted in television dramas Reply 1994, Plus Nine Boys, Who Are You: School 2015, The Village: Achiara's Secret, Guardian: The Lonely and Great God, Mystic Pop-up Bar and The Golden Spoon.
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