Due to a number of rebellions of local lords in many regions of Otomo clan's territory after the Battle of Mimi-kawa in addition to the invasions by Yoshihisa SHIMAZU, Takanobu RYUZOJI, Tanesada AKIZUKI and others, the territory of the Otomo clan was occupied one after another.
耳川の戦い後、大友領内の各地で国人の反乱が相次ぎさらに島津義久や龍造寺隆信、秋月種実らの侵攻もあって大友氏の領土は次々と侵食されていく。