Then during the Battle of the Kurikara Pass in 1183, he joined the war by taking the side of the Taira family; however, he was defeated by MINAMOTO no Yoshinaka's army and became their captive.
その後寿永2年（1183年）の倶利伽羅峠の戦いに平家方で参戦するも、源義仲軍に敗れてその捕虜となる。