After he got armed groups of Kanto region in his clutches he went to the West, and he exploited a gap while Takauji reconciled with Tadayoshi and returned with Ko clan including Moronao, he devised a stratagem and executed Moronao and a whole family in Mukogawa, Settsu Province (Itami City, Hyogo Prefecture).
関東の武士団を手中にした能憲は西上し、尊氏が直義と和解し師直ら高氏一族と共に帰還する隙を狙い、調略を用いて師直を摂津国武庫川（兵庫県伊丹市）にて、一族ごと処刑した。