Tradition/Customs
[Series 1: The role of the previous nine years and the role of the later three years] Why did the Ou War occur at the end of the Heian period...
Also known as the "Twelve Years' War of Oshu," this battle, which took place at the end of the Heian period between Mutsu and Dewa, now Iwate and Akita prefectures, was not just a local battle but also served as a bridge to the Kamakura period...
Daiwa Consilio