The OVA series will depict a prequel story to Chise's acquaintance with the Magus. Chise Hatori's young life has been filled with neglect and maltreatment, lacking any semblance of affection. With no close relatives to provide comfort, she has faced numerous challenges and obstacles. However, when she least expects it, a life-changing experience comes her way. A man possessing peculiar powers and a beastly head purchases her from a slave auction, transforming Chise's existence forever.