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...

Kohaku follows Hayate into the woods and finds him there with Rurijo. Enju also witnesses the clandestine meeting and confronts Rurijo about her betrayal. Rurijo, now abandoned by Enju, vows to kill Princess Sakura...