There is a whole photo gallery dedicated to Japanese people sleeping in public. I don't see what the big deal is. These people work really hard. They should be allowed to sleep on the train, at the bus stop or in the middle of Shibuya Crossing. As long as they're not a danger to themselves or others...
We have only one shot of a sleeping beauty in the final cut of Tokyo Cowboys, although we shot so many.
You can tell by her uniform that she is an elementary school student. Clutching her school bag, she is conked out on the Yamanote Line in the middle of the day. It must have been the volley ball. Or the Kanji workout. English lesson or Juku.
It's not just being tired, though. Some of the cars on that line are still old. No one speaks, and the gently rocking of the train and hypnotic metallic noises make you feel like you are in the belly of the great warm mother machine.