However, he had to attend the Kakan no gi of the Emperor as Sessho, and he was attacked by military soldiers of Shigemori during the palace visit of December 7, and the Kakan ceremony was postponed since Motofusa could not attend.
しかし、帝の加冠の儀には摂政として参内しないわけには行かず、10月21日参内途上で重盛の軍兵に襲われ、基房が参内できなかったため加冠の儀は延期されたとされている。