Yoshihisa's younger brother, Yoshihiro SHIMAZU went off to war at the head of a force only slightly stronger than 300 men, leading them to Kizakibaru to wait in ambush for the enemy.
義久の弟・島津義弘はわずか300余人を率いて出陣し、木崎原に兵を伏せて、誘い込んで強襲した。