The Taira clan trusted Cloistered Emperor Goshirakawa and hoped to develop grounds for reconciliation; therefore, the Taira clan could not imagine a sudden attack by the Kamakura (Minamoto) side.
法皇を信頼して和解に向け展望を開いていた平氏にとって、鎌倉方の突然の攻撃は想定できるものではない。