Tsunehiro KAZUSA and Yoshiaki MIURA of the powerful government officers of the alternated Kazusa and Sagami Provinces, were pressurized by Mokudai (deputy kokushi, or a deputy provincial governor) of Taira clan, and this became a trigger for them to greatly contribute to the mobilization of the army of MINAMOTO no Yoritomo.
特に、この時に交替した上総国・相模国では有力在庁の上総広常・三浦義明は平氏の目代に圧迫を受け、源頼朝の挙兵に積極的に加わる要因となった。