While working hard to manage the government of Echigo from that time on, he also strived to reconcile the Uesugi clan and the bakufu with Koga kubo, acting as an intermediary in peace negotiations which started in 1481 between the two parties.
以後は越後の国政に専念する一方で上杉氏・幕府と古河公方との和睦の成立にも尽力し、文明12年（1481年）から始まった両者の和平交渉の仲介にあたった。