After the Nara period, the clan was often involved in political conflicts (refer to the related articles), and every time some members of the clan had to be punished, therefore, the clan gradually declined.
奈良時代以降、たびたびの政争に巻き込まれ（「関連項目」を参照）、そのたびに一族から処罰される者を出した事なども影響し、徐々に衰えた。