Seen one morning on the way into Tokyo on the Shonan Shinjuku line.
As I mentioned before, the trains are woven into the fabric of life in Japan. Strangely enough they stop quite early, often leaving people to dash madly for their last train or stranding them very far from home. I am just guessing, but in the case of this man it was probably an intentional all night outing. Work parties in Japan have a few levels to them - the first party, which is moderately respectful after which some people go home, the second party, which can involve Karaoke and more drinking, and the respectful air is eroded, perhaps a third party after that that involved a pub or snack bar - and so on and on.
Such is the tyranny of the Last Train that it is not unusual to see people sleeping in train stations, outside train stations (fully prepared with blankets), parks, Internet cafes, capsule hotels . . . An early morning nap when the trains start running again is usually a nice relief.
As for this man, well, like most people I see fall asleep on trains here, he woke from his deadened slumber a mere minute before his stop, and walked off the train as the wrinkles fell out of his suit and his professional facade was restored.
The theme continues . . .