Absolutely LOVE how the 9ki/10kis are just "randomly" walking around in the background, and then they just BOLT over to where the camera crew is when the whistle is blown. At first I just thought Sayu and Reina were the only ones there, but then just after the 0:50 second mark of the video (when Sayu asked the dude if he knew how many members MM had) that someone was jumping up and down with a sign that had MM's name and "50" written on it.
And poor Yasshii got stuck trying to recite all of the prefecture names.