保元之亂
Emperor Sutoku, dissatisfied at his line's removal from the succession, allied with Tadazane and Yorinaga, launching the Hōgen Rebellion immediately after Toba's death in 1156. Nariko had at this point already become a nun, but she showed strategic ability in the conflict. Toba had left Taira no Kiyomori and his brothers out of his will because Kiyomori's stepmother was Prince Shigehito's wetnurse, but by inviting them to help Go-Shirakawa's side in spite of this, Nariko helped him to win the war.