This is a video that follows a polygamous family living near Tokyo. Tanaka Kazutoshi (not his real name) is 51 years old and unemployed. However, he lives with six wives. On the day we began our interview, he was due to welcome his sixth wife. "It feels like we're adding to our group," he says, "Wow! 24? That's impressive!" - not a single complaint or jealousy is heard. He has a gambling habit and a tendency to borrow money...