Noriaki assisted Motouji together with Morofuyu, but when Shigeyoshi UESUGI of Tadayoshi troop was assassinated by the samurai under the command of KO no Moronao, Noriaki who was also from the Tadayoshi troop, came to countervail against Morofuyu, then he and his adopted son Yoshinori UESUGI together became in conflict with Takauji; in 1351, Noriaki exiled Morofuyu from Kamakura and had Suwa clan attack him, which made Morofuyu commit suicide, and further tried to invite Tadayoshi to Kamakura, at which Takauji got furious and deprived him of the post of shugoshiki (military governor) of Kazusa and Echigo Provinces.
憲顕は師冬と共に基氏を補佐するが、直義方の上杉重能が高師直の配下に暗殺されると、直義方の憲顕は師冬と拮抗するところとなり、養子の上杉能憲と共に尊氏に敵対し、1351年（観応2年）には師冬を鎌倉から追放して諏訪氏に攻めさせこれを自害に追い込み、さらに直義を鎌倉に招こうとしたため、尊氏の怒りを買って上野・越後における守護職を剥奪された。