Japan is located right off the east coast of the Asian continent between the Pacific ocean and the Sea of Japan stretching all the way from the Sea of Okhotsk with the East China Sea to the South.
Japan is 60th biggest country in the world, bigger than U.K. and smaller than France. As an island, Japan is 7th biggest island in the world.
Japan is made up of about 6,850 islands, but about 95% of the island is made up of 4 main islands; 北海道（Hokkaido）, 本州（Honshu）, 九州（Kyushu）, and 四国（Shikoku). South of the main 4 islands, there is the 琉球Ryukyu island chain which extend just south of Kyushu, partially making up Okinawa prefecture. In addition, Honshu is divided into 5 areas, which is Touhoku, Kanto, Chubu, Chugoku, and Kansai.
The Country divided into 47 prefectures, each with their own crest and flags. The prefectures are divided into 4 different categories, 都 (To), 道 (Do), 府 (Fu), and 県 (Ken).
都（To）refers to metropolis which applies to 東京 (Tokyo), Japan’s capital.
道 (Do) is a unique category translating to something like circuit and that applies to all of 北海道 (Hokkaido) in the North.
府(Fu) refers to the urban prefectures, which applies only to the cities of 大阪 (Osaka) and 京都 (Kyoto).
県 (Ken) refers to the other 43 prefectures.
Tokyo is the largest city in the world with its great metropolitan area including Tokyo and its suburbs containing about 37 million people which is about 30% of population in Japan. That’s more than entire population of Canada.
However, Tokyo is kinda like 23 smaller cities all smashed into one, divided into units calls Words.
After Tokyo Kanto region, Osaka and Nagoya are the second and third largest cities respectively in Japan.
90% of people in Japan live in cities, and the vast majority on Honshu and Kyushu.
The busiest airport Haneda (HND) which is in Tokyo and Narita (NRT) which is like an hour and a half drive away outside of Tokyo. Then Osaka’s Kansai international airport (KIX) and Fukuoka international on Kyushu (FUK).