At this point, the advance contingent of allied forces under Toyotomi, consisting of 6,000 troops, including Hidehisa SENGOKU, Motochika CHOSOKABE, Nobuchika CHOSOKABE and Masayasu SOGO, landed in Kyushu as reinforcements to the beseiged Otomo clan, and encamped across the Ono-gawa River facing Iehisa's camp.
ここで大友軍の援軍として仙石秀久、長宗我部元親、長宗我部信親、十河存保ら総勢6000余人の豊臣連合軍の先発隊が九州に上陸し、大野川を挟んで家久と対陣した。