Japan is an island country located in Asia consisting of four main islands - Honshu, Hokkaido, Kyushu, and Shikoku. The largest island is Honshu, where the capital city of Tokyo is located on the east coast. Tokyo is one of the largest cities in the world. Japan has mountains and hills, including the active volcano Mt. Fuji. Most people live near the coasts where the land is flatter. Japan also experiences frequent earthquakes due to its location along fault lines.