Ōkimi (大王, Ōkimi, Daiō), or Ame no shita Siroshimesu Ōkimi (治天下大王, Chi Tenka Daiō), was the title of the head of the Yamato Kingship, or the monarch title...

The Yamato Kingship (ヤマト王権, Yamato Ōken) was a tribal alliance centered on the Yamato region (Nara Prefecture) from the 4th century to the 7th century...