Tomomasa's father in law, Tokimasa HOJO, was gripping the real power in the bakufu, and exercised the administrative authority over Musashi Province as Tomomasa's guardian, while he was in Kyoto, and therefore, Tokimasa had a conflict with Shigetada HATAKEYAMA, who was the head of the Musashi samurai (warrior) corps.
朝雅の舅で幕府の実権を握っていた北条時政は朝雅の後見人として、朝雅の上洛後に武蔵国の行政権を握っており、武蔵武士団の棟梁である畠山重忠と対立する関係になっていた。