Yook Sung Jae

Yook Sung Jae is a South Korean singer, songwriter, actor, model, entertainer, and member of the boy group BtoB and its sub-group, BtoB Blue under Cube Entertainment. He released six digital singles through music project 3x2=6 from December 2019 to February 2020 and later he made his solo debut with Yook O'Clock on March 2, 2020.

He enlisted for his military service on May 11, 2020. He was discharged on November 14, 2021.

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