Set in the Heian period of Japan...
In a village is kept a sword with the power to end the world. One maiden of a shrine is fated to seal its power and protect it: Princess Tamayori.
She has spent her days since childhood being tormented by her sins in loneliness and under the heavy burden of protecting the Sword.
...Until she encounters a god and her lonely life changes forever; she will face the end of the world with comrades willing to help her.