However, after that, when he accepted a title (from the Imperial court) without the previous permission of his brother, this act offended Yoritomo, and moreover, as he tried to become independent, he started to have conflicts with Yoritomo, and condemned Yoritomo and called him the Emperor's enemy.
その後、兄の許可を得ることなく官位を受けたことで頼朝の怒りを買い、それに対し自立の動きを見せたため、頼朝と対立し朝敵とされた。