In September and October, Masayuki, who had left the umbrella of Hojo as a result of the peace made between Hojo and Uesugi, gave his support to Nobushige, and Ieyasu enhanced his military power by having Masatada SONE assist Nobushige and Masayuki.
9月には、北条・上杉の講和の結果北条傘下を離れた昌幸が信蕃に加勢するようになり、家康は信蕃と昌幸に曽根昌世らをつけて戦力を強化した。