Meanwhile, the lord of Kuroi-jo Castle, Naomasa AKAI who was dreaded as the 'Red Ogre of Tanba' and the lord of Yagami-jo Castle started a revolt to conquer Tanba Province from Hideharu HATANO, and in September 1565, Nagayori MATSUNAGA led an expedition with more than 700 soldiers.
そのような中、黒井城の城主「丹波の赤鬼」と恐れられた赤井直正と、八上城の城主は波多野秀治に代わり、丹波国を手中に収めようと争乱を始めたので、同年8月松永長頼は700兵余りを引き連れ出軍した。