In the Battle of Ichinotani broke out in February 1184, he fought against the troops belonging to the Minamoto clan that were commanded by MINAMOTO no Yoshitsune, with his father Tomomori.
寿永3年（1184年）2月の一ノ谷の戦いでは、父・知盛に従い、源氏方の源義経軍と戦闘。