As if Hidehira's misgivings proved right, the successor, Yasuhira killed his younger brothers who were in the Yoshitsune group and, yielding to Yoritomo, attacked Yoshitsune, whose head was offered to Kamakura.
秀衡の予感が当たったのか、跡を継いだ泰衡は義経派であった弟達を殺害し、頼朝に屈して義経を襲撃しその首を鎌倉へ差し出した。