Nukanobu

Nukanobu occupies northern Mutsu, a land of river valleys and uplands where branches of the Nanbu family established fortified seats. In 1591 Kunohe Masazane challenged Nanbu Nobunao during a struggle for leadership. Toyotomi Hideyoshi sent an army to support Nobunao, and Kunohe Castle fell after a siege. The settlement that followed broke up many local strongholds and strengthened the authority of the Nanbu rulers.