Thank you soooo much for sharing this amazing fancam :) I really appreciated that it was a full-scale shooting so that I could enjoy watching all the members
yixing's solo perf was after this song, so he was probably changing and getting ready. and to make it not weird that only one left the stage, they had some other members leave the stage early too. well that's my guess ^.^
antlulu correction, sehun and kai were doing lay's part (the "step, step" part) and chanyeol actually did part of tao's original part and kris's part while tao did the rest of kris's part.