Nagoya is Japan's fourth-largest city and a major industrial center, with a population of over 9 million people in the greater Nagoya area.

Astro Boy, created by Osamu Tezuka in 1963, is considered the first modern anime and helped to popularize the genre both in Japan and around the world.

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