As soon as Kagenaka NAGAO detected Shigeuji's action, he left for Fuchu with the soldiers of Kozuke and Musashi Provinces, and a troop of UESUGI clan also left for Fuchu to join the Kagenaka's troop.
この報せを聞いた長尾景仲は直ちに上野・武蔵の兵を率いて府中に向けて出撃し、上杉一族もこれに合流すべく出陣した。