Acting · b. 1995 · Yongin, Gyeonggi, South Korea Yook Sung-jae Biography Yook Sung-jae (육성재) is a South Korean singer and actor. He is a member of the boyband BtoB. Acting BTOB TIME: Be Together the Movie Self 2023 United Cube Concert - One Self 2018 Remember That Sung-jae 2016 Way Back Home Bullied Student 2015 Agent-readable