Jimmu's Eastern Expedition
Jimmu's Eastern Expedition (神武東征, Jinmu tōsei) refers to a series of legends in which Emperor Jimmu became the first emperor of Japan, after defeating Nagasunehiko, who had ruled the Nara Basin and its surrounding area, after leaving Hyuga Province. According to the traditional dating system adopted in late 19th century, this expedition took place in 663 BC.