S.M.ROOKIES endlessly tease us for their impending debut, whenever that may be, with video clip after video clip, and up today is a new dance practice video by the boy rookies, SR15B!

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Hansol, Johnny, Taeyong, Yuta, Ten, and Jaehyun are here to leave you impressed with their sharp, precise moves! You can see the boys are giving it their all, focusing on each gesture and pose they strike, so much so that they fall over in exhaustion at the end!

Take a look above!