Singer BtoB has a photo time at the K-POP Concert together in 2021 at the SK Olympic Handball Stadium in Olympic Park, Seoul Songpa-gu, on the afternoon of the 17th.
About Lee Chang-sub
Lee Chang-sub, better known mononymously as Changsub, is a South Korean singer, songwriter, host and musical actor. He is a lead vocalist of the South Korean boy group, BtoB.
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