This has got me pondering, I wonder if any of the guys needed to pee and the girls wouldn't let them until they got home after the event. Obviously I've searched for such pictures

I could just imagine some guy in tight fitting drainpipe trousered suit, being dragged around (I'm sure there would have been drinking, there always seem to be drunk people in Shibuya) getting more and more desperate, being pulled back onto the suburban train for the hour long journey back home.