His house was bought with a loan in his twenties, when there was not much living space. What about the furniture at home, that is, many beds were transformed by some of his previous furniture? Tatami has no mattress. What about your own clothes? You may add one suit every year, that is, about ten sets, and a T-shirt can last for 20 years. Usually eat at home and don't go out to eat. He cooks at home, which is also very simple. He is a man who seldom eats meat and is basically a vegetarian.
Ordinary entertainment is listening to music at home, watching movies, going out to visit those free forest parks, climbing mountains, taking a walk, relaxing, not going to any entertainment places, and those scenic spots with expensive tickets.
This kind of life is a typical minimalist life. Life is simple and uncomplicated, as long as you have enough.