Even after the Taira clan escaped to Saigoku (the western part of Japan) in July 1183, men of the Taira clan lived over wide areas of both Iga and Ise Provinces, which had been their home territory, so Koreyoshi OUCHI was assigned as Ise shugo (military governor of Ise) and Saneharu OI, a vassal in Musashi Province, was dispatched to Ise to subdue the Taira clan and their retainers there in April 1184.
寿永2年（1183年）7月の平氏西走後も、その本拠であった伊賀・伊勢両国には平氏家人が播居しており、元暦元年（1184年）3月に大内惟義が伊賀の守護に補任され、武蔵国の御家人大井実春が平家与党討伐のため伊勢に派遣される。