Episode #1.6 - S1-E6
Continuity mistake: After Kang-bae and Yeo-rin have finished trying on dance clothes, there are walking on a street. There is a man in a blue jacket walking along a sidewalk who disappears when it cuts to a closer shot of Kang-bae and Yeo-rin. There is also a man and woman to the right of shot, who are walking in a straight line in the establishing shot and then walking in a 10 o'clock direction in the closer shot. (00:32:18)