Luhan and Sehun were sitting together the entire time, and they even went to the washroom together. Kai initially looked really sleepy, but when he went into the washroom, he suddenly started laughing loudly, so loud that we could hear him across the aisle. The thing about Sehun unbuttoning Kris’ shirt actually went like this — little white rabbit (Luhan) started to unbutton it, then got blocked by Kris, and Sehun immediately took over.