At Aburasaka path in Nishimino (western Mino, the border with Asakura clan's territory), they frequently provoked each other because the Nishimino forces (vassals in western Mino region) gradually became on the side of Nobunaga causing territorial friction.
西美濃勢が信長寄りに振る舞う度に領地が油阪で通じることになり、互いに挑発を繰り返していた。