The Way of Zero Yen Life

 What a thing to imagine! On the one hand, it is very hard for people to have a house in Tokyo, but on the other Mr.Suzuki&Mi-chan have a house for zero yen and live for zero yen.
 How do they live for zero yen? Is it true?
 "Can you live for zero yen?" I asked.
 "Yes,of course. Because there is many treasures in Tokyo"
 "Treasures?" I can't understand.
 "Yes. I get all money from the street." He said.
 "I want to know how to live for zero yen. Please tell me."
 "Sure. Please come in. Let's drink at first."
 And he invited their room. They gave me some fresh Japanese foods and sake. I started the reserch.