This book takes the perspective of looking at the world from the perspective of Japan, as there are many elements within Japan that guide the world.

The first half of the 1990s was a turning point for the Japanese economy, with the end of the upward trend and a flat economy. It was around this time that the term ""low birthrate"" appeared, and there is a strong impression that the evolution of Japanese society simply stopped there. Since then, as other countries have developed, some say that Japan has lagged behind internationally. However, the changes over the past 30 years are not that simple.

In other words, the decline in population, decline in prices, decrease in the amount of work, decrease in the composition ratio of tertiary industry, increase in Engel's coefficient, return to the home, localization, etc. did not exist 30 years ago.

These phenomena were first observed in Japan, but there are also signs appearing in statistics around the world. Furthermore, it can be considered that it has been observed in Japan at an early stage because of Japan's geographical, cultural, and historical characteristics. If these phenomena are good for the world, then there are seeds within Japanese society that will nurture them.