According to "Gyokuyo" (A diary of Kanemasa KUJO), when Yoritomo secretly proposed to the government he would reconcile with the Taira clan on September 10 of the year that Kiyomori died, Munemori rejected that proposal citing Kiyomori's will that 'even the very last surviving child or grandchild should not die before Yoritomo,' suggesting that it was true that Kiyomori had strong hatred against Yoritomo.
『玉葉』によると、死去した年の8月1日、頼朝が密かに院に平氏との和睦を申し入れると、宗盛は清盛の遺言として「我の子、孫は一人生き残る者といえども、骸を頼朝の前に晒すべし」と述べてこれを拒否している事から、頼朝への激しい憎悪があった事は事実と思われる。