Teenager Kurikura Kansuke resides in a small village with his family, but tragedy strikes one day when his younger sister, Ayame, is brutally murdered. Six years later, while searching for his missing older brother, Kansuke encounters multiple women who all claim to be Kurikura Ayame. He discovers that, driven by grief for Ayame, his brother created dolls, each containing a part of her corpse and enhanced for combat. Kansuke vows to find his brother and halt the mindless violence.