1. Yes, Tokyo is the capital of Japan.

2. Tokyo is located in the eastern part of Japan and is the most populous city in the country. It is not only the political center of Japan, but also the economic and cultural center of the country. Tokyo was originally a small fishing village, but it became the capital of Japan in 1868, during the Meiji era. Since then, Tokyo has developed rapidly and has become one of the most modern and dynamic cities in the world.

3. As the capital of Japan, Tokyo is home to many important government institutions, including the Japanese government, the National Diet, and the Supreme Court of Japan. It is also the center of international trade and finance, with many of the world's top companies based in Tokyo. In addition, Tokyo is famous for its cultural attractions, such as the Tokyo Tower, the Tsukiji Fish Market, and the Sensoji Temple.

4. In conclusion, Tokyo is indeed the capital of Japan. It is a city that is not only important to Japan, but also to the world as a whole. Tokyo's unique blend of modernity and tradition makes it a fascinating place to visit and experience.