Osaka's Island is the sixth largest island in Japan and is known as Honshu. It is located in the Sea of Japan and is the main island of the Japanese archipelago. It is home to the cities of Tokyo, Kyoto, and Osaka, and is the most populous island in the country. Honshu is also the most industrialized and economically developed island in Japan. It is a major transportation hub, with many airports, ports, and railway lines connecting it to other parts of the country.