He joined the army of the MINAMOTO no Yoshitsune in the fight to hunt down and kill Ise-Heishi (Taira clan); at the battle of Yashima, he demonstrated his prowess as a warrior; for example, he burned down the fortress after the Taira's army escaped to the sea and made the Taira's army give up the will to counterattack.
伊勢平氏追討の戦いでは源義経軍に加わり、屋島の戦いに際しては、平家軍が海上に逃れた後にその城塞を焼き払い、反撃意欲を絶つという活躍を見せている。