The Etsu-So Alliance (the Echigo and Sagami alliance) didn't function well and the alliance between TAKEDA, SATAKE, and SATOMI was established, making the Hojo family anxious over the defense of the Kanto region.
越相同盟が完全に機能せず、武田と佐竹、里見の同盟が成立し、関東の防備に不安を覚えた。