Believing the slander of his assistant Yoshikane SHIBUKAWA, Kanto Shitsuji (assistant to Kanto Kubo), he notified Yoshimasa of the rebellion of Mochitomo UESUGI of the Ogigayatsu Uesugi clan, which led to the objection of support to Masatomo within the Uesugi clan.
、補佐である関東執事渋川義鏡の讒言を信じて扇谷上杉家の上杉持朝の反逆を義政に通報したため上杉氏内部で政知擁立に異論が出された。