Sakura is the granddaughter of a mysterious moon princess who slew demons with her Blood Cherry Blossom sword. All her life Sakura has been forbidden to look at the full moon without knowing why. Then one night, unhappy over her impending marriage, Sakura gazes up at the moon, only to see a demon attacking her...

Enju and the followers of the moon are nowhere to be found after the destruction of the hidden palace. Sakura has returned with Aoba, but the lovers may soon be parted again. The emperor has asked Aoba to take another bride...