The homeless man's name is Saito. He makes money by selling the comics he found on the street.
He seemed really happy when he was reading a catalog of department stores or fashion magazines.
The interviewer said that even though homeless people like Mr. Saito live in that way, they don't lose themselves.
I can't understand their real feelings, but I can imagine how hard the life if I lose my house and money. However they can find bare happy within their life, it is very sad and bitter life.