What is the capital city of Japan?

The capital city of Japan is Tokyo, which is not only the political center of the country but also its largest city. Tokyo serves as the seat of the Japanese government, including the Emperor, and is the focal point of the nation's culture, commerce, and education. It became the capital in 1868 when the Emperor Meiji moved the capital from Kyoto to Tokyo, marking a significant shift in Japan’s political landscape during the Meiji Restoration period.

Osaka, while a major city in Japan, is known for its strong economic output and vibrant culture but does not hold the status of a capital. Kyoto is famous for its historical significance and numerous temples but was the former capital before Tokyo. Seoul, although an important city, is the capital of South Korea, not Japan. Therefore, Tokyo is distinctly recognized as Japan's capital city.