Japan is an island country located east of the Sea of Japan. It has four main islands - Hokkaido, Honshu, Shikoku, and Kyushu - surrounded by mountains and with Tokyo on Honshu as its capital and largest city. The document instructs to label locations on a map including seas, regions, and cities, and compares the Kanto and Hokkaido regions in terms of climate, population density, and industries.