In January 1181, Retired Emperor Takakura died and the Goshirakawa cloistered government started again, and based on the wish of Takakura to establish a temporary military government in Kinai, Kiyomori named TAIRA no Munemasa as Sokan (a military position with power over the provinces of the Kinai) to directly control the Kinai area.
治承5年（1181年）1月、高倉上皇が死去し、後白河院政が再開されたが、畿内に臨時の軍政を布くべしという高倉の遺志に基づいて、清盛は子の平宗盛を畿内周辺を直接管領する惣官に任じた。