The Sakaikubo group had not been able to take effective action to deal with the allied forces of Takakuni and Uragami, which had been advancing accumulating momentum, while winning many battles since Harima Province.
播磨からの転戦に次ぐ転戦で、破竹の進撃を見せてきた高国と浦上の連合軍には手を焼かされ続けていた堺公方派。