However, on July 8, 1156, the Emperor Goshirakawa and his military force who followed the dead Cloistered Emperor Toba's last instruction confiscated the Higashi Sanjo-dono Residence (when Yorinaga stayed in Uji), and three days later, lots of government officers and the military force on the emperor's side barricaded themselves there together with FUJIWARA no Tadamichi.
ところが、保元元年（1156年）7月8日、亡くなった鳥羽法皇の遺命を奉じた後白河天皇側の軍が東三条殿を接収（頼長は宇治に滞在中であった）して、3日後には天皇と藤原忠通以下、天皇側の文武百官がここに立て籠もった。