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

The Kamakura period, which lasted from the 12th to the 14th century, was a time of political upheaval and marked the rise of the shogunate.

The Showa period, which lasted from 1926 to 1989, was marked by Japan's militarism and involvement in World War II.