However, Yoshihisa SHIMAZU invaded the territory of the Otomo clan later and the army of Iehisa SHIMAZU defeated the Otomo clan in the Battle of Hetsugi-gawa River to occupy the territory of Bungo Province which was the home ground in January 1587.
しかし島津義久はその後も大友領へ侵攻し、天正14年（1586年）12月には島津家久軍が戸次川の戦いで大友方を破って本拠地である豊後国府内を占領してしまった。