Although Ujinao and Ieyasu confronted each other once in Wakamiko of the Kai Province (the Battle of Wakamiko), the Hojo clan reduced its power to fight against the Tokugawa clan, since in Shinano, Masayuki SANADA defected from the Hojo clan, and in Kurokoma of Kai Province, Ujitada HOJO, who led detached forces, lost to the Tokugawa army, and only the limited area of the Gunnai region remained in the hands of the Hojo clan in Kai Province.
その後、甲斐の若神子において氏直と家康は対陣したが（若神子の戦い）、信濃では真田昌幸が離反し、甲斐においても別働隊の北条氏忠が、黒駒において徳川方に敗北し、甲斐の北条領は郡内地方の領有に留まる等、対陣は不利となった。