During the eastern expedition (Jinmu tosei), Emperor Jimmu's brother Itsuse no Mikoto was killed in a battle against the local chieftain Nagasunehiko ("the long-legged man") in Naniwa (modern-day Osaka). Emperor Jimmu realized, as descendants of the sun, that he did not want to fight towards the sun (to the east), but to fight from the sun (to the west). So his clan went to the east side of Kii Peninsula to battle westward. They reached Kumano (or Ise) and went towards Yamato. They were victorious at the second battle with Nagasunehiko and conquered the Kinki region.