When I first went to work in Japan it was very prosperous. For the gov't to admit to the country having homeless people...well, they just DIDN'T.

But I took a photo of a fellow sleeping on the ground in front of a park bench in Ginza in 1993. At the time, the land was worth $1 million US a square foot.

I doubt there is 'homeless' help there...or any agencies that might help are few and far between.

A closet would not be unusual in terms of size...there are 'cubicle' hotels where a person rents a spot to sleep and that is it..though I presume there are 'facilities' in a common area.