Two days after the end of the battle, on June 15, Hideyoshi sent a letter to Takakage KOBAYAKAWA, a senior vassal of the warlord Terumoto MORI in the Chugoku Region, to inform him that the battle had resulted in his victory, implicitly prompting the Mori clan, which had kept a neutral stance, to submit itself to Hideyoshi.
また、合戦終了の2日後の4月25日(旧暦)（6月15日）に秀吉は中国地方の戦国大名・毛利輝元の重臣・小早川隆景に書簡を送り、自軍の勝利に終わったことを報告するとともに、中立状態にあった毛利氏の自らへの服属を暗にうながした。