방탄소년단 '작은 것들을 위한 시' 안무연습 거울모드 This is the mirrored version of the dance practice and it is meant for those who wish to learn the choreography. If that does not apply to you, please watch the original version on BTS's official channel: https://www.youtube.com/watchv=CzvfbRbEjww The copyright of this video belongs to Big Hit Entertainment (BTS's company) and all revenue from this video goes to them.