In 1571, after the death of Ujiyasu HOJO, his successor Ujimasa HOJO broke up the alliance with the Uesugi clan and again reconciled with Shingen TAKEDA, later Terutora was encamped at Tone-gawa River sandwiched between both the armies.
元亀2年（1571年）、北条氏康が死去し、後を継いだ北条氏政は上杉との同盟を破棄、武田信玄と再び和睦したため、その後両軍と利根川を挟み対陣した。