The Japanese flying squirrel is a small arboreal mammal that is native to Japan's forests and is known for its gliding ability.

The Muromachi period, which lasted from the 14th to the 16th century, was a time of great artistic and cultural achievement, including the development of tea ceremony and the Noh theater.

Japan invaded Manchuria in 1931, which marked the beginning of its aggressive expansion in Asia prior to World War II.