However when the siege was broken by the army of MINAMOTO no Noriyori, Kiyosada charged to the enemy encampment with three horsemen, who were Kiyosada, his male cousin TAIRA no Tsunetoshi, and his brother-in-law TAIRA no Kiyofusa, and was killed in battle.
しかし源範頼軍に陣を突破されると、従兄弟の平経俊、義兄の平清房とともに三騎で敵陣に突入し、討ち取られた。