However, Oiwa was not satisfied with only inheriting his father's troops and so he dominated OKAI no Sukune's troops as well as ship soldiers which led Oiwa and Okai to have conflicts with each other.
大磐は父の兵馬を引きつぐに飽き足らず、小鹿火宿禰の兵馬と船官を配下に収めて、小鹿火宿禰と対立した。