Comment by shiroiushi

There are some homeless people living in camps in certain parks. Ueno Park has a bunch of them. Others have camps hidden away in flood-plain areas next to rivers. Some live on sidewalks, like under overpasses, and have a bunch of junk in front of their sleeping bag that they're trying to sell.

Generally, these homeless people want to be homeless. There's options for homeless people to get help, but some people simply don't want to be part of normal society for whatever reason (like mental illness).

Overall, in my experience living here, I very rarely see homeless people. It's nothing at all like the huge homeless camps in US cities these days.