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...

Every time Asagiri uses her powers, she shortens her life span. In spite of this, she continues to use her powers to fight her former lover, Ukyo. Though Ukyo will not attack her, this is a fight Asagiri cannot win.