The Future of Japanese Surnames: All Becoming Sato by 2531

An academic conducted a study and found that by 2531, everyone in Japan will have the surname Sato. This is because the Japanese government has legislatively mandated that all married couples take one surname together. Currently, 1.5% of the population has the surname Sato, and this number is growing each year. If the marriage law remains in effect, the surname will gradually spread to all Japanese citizens, according to the calculations of the academic.