(Hōgen 3, 11th day of the 8th month) Shortly thereafter, Emperor Nijō is said to have acceded to the throne (sokui).

[6] After Nijō was formally enthroned, the management of all affairs continued to rest entirely in the hands of Go-Shirakawa, as per the system of Cloistered Emperor (insei).

This left the ambitious Fujiwara no Nobuyori, with allies from the Minamoto clan, a perfect opportunity to effect an uprising.

Minamoto no Yoshitomo and Fujiwara no Nobuyori moved the abducted Go-Shirakawa to the Imperial palace with Emperor Nijo, placing both under house arrest.

[9] Nobuyori had himself declared imperial chancellor, and began to see his plans for political power fall into place.

Taira no Shigemori (the eldest son of Kiyomori) led 3,000 cavalry and attacked the Imperial Palace where Yoshitomo and Nobuyori were staying.

Nobuyori ran away immediately, but Minamoto no Yoshihira (the eldest son of Yoshitomo) fought back and a fierce battle ensued.

The Heiji rebellion further weakened Imperial authority, placing power in the hands of the Taira samurai clan.