What is the setting of Number 9 Dream by David Mitchell?

The setting is Tokyo Japan. Tokyo is the capital of Japan, both politically and economically, and with a population of over eight million it is the largest city in the country. Many people think of Japan as only Tokyo, with its modern high rises and miles of neon criss-crossed with highways and subway lines. Like many Japanese cities, Tokyo was destroyed by U.S. bombs during World War II and has been rebuilt almost from scratch. As the headquarters of multinational corporations and as an entertainment Mecca, Tokyo provides opportunities that attract a wide range of people.