Japan is 21 times larger than Kuwait.
Area: 377,915 km2 World Factbook
Population: 127,103,388 (July 2014) World Factbook
Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south. Wikipedia
Area: 17,818 km2 World Factbook
Population: 2,742,711 (July 2014) World Factbook
Kuwait, officially the State of Kuwait, is an Arab country in Western Asia. Situated in the northern edge of Eastern Arabia at the tip of the Persian Gulf, it shares borders with Iraq and Saudi Arabia. As of 2013, Kuwait has a population of 4 million. Wikipedia