Japan is an island nation in East Asia.
Japan was one of the major countries involved in World War II, though peace has come to the country in modern times.
The ship Otoshiana Maru may have been from there.
Real World Background
Japan, or as it is locally known, Nihon or Nippon, officially Nihon-koku or Nippon-koku, is located in the Pacific Ocean. It lies to the east of China, Korea, and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea in the south. The kanji characters that make up Japan's name mean "sun-origin," which is why Japan is sometimes identified as the "Land of the Rising Sun."
- Japan at Wikipedia, the Free Encyclopedia