I was taken enough by the Ryue Nishizawa-designed Moriyama house enough to see what I can find out about the man who commissioned it. This what my feeble inquiry has turned up:
Yasuo Moriyama is a Japanese individual known for his unique lifestyle and his collaboration with architect Ryue Nishizawa. He is often referred to as an “urban hermit”.
I reckon Moriyama and I would get on quite well.
There's a film about him and his house, logging here for a future watch.