This rapid expansion of the influence of the Oyumi-kubo family had set the Gohojo clan and the Koga-kubo family on their guard, which resulted in the alliance between these two families.
しかし、このような小弓公方家の急速な勢力拡大は後北条氏や古河公方家に危機感を抱かせ、両者に同盟を結ばせるに至った。