Mr. Saito became the homeless after he had lost his job at a factory. he always collects some comic books and sells them. in the short movie, he talked happily about himself against a interviewer.
i understood people who live without their address were not always unwilling to do that. after i saw the video, i remembered a story about the homeless i have heard before from my teacher in a cram school. he said that they lived as the homeless because they wanted to do. if they don't do that, they would be receive an economic assistance. therefore, i thought they probably found some happiness in their life.