This story takes place in the Ulstrauss Empire located in the Western Continent. Here, humans and demons are at odds, fighting day in day out.... more>> The female lead, Lady Ninita, is the only child of the Marquis, and has been pure and innocent since young. Additionally, she possessed a high aptitude for exterminating demons. Everyone looked forward to seeing her train to become the Saintess, who appeared once in a millennium. However, due to a strange combination of circumstances, she and the pure-blood demon Wolf King, Geoff, fell in love with each other instead. <<less