Kanan Takakiyo runs the discipline committee at Tama Municipal Votive Academy with the popularity and athleticism to match. She is also, secretly, a centuries-old demon sent to feed on human souls. She sets her sights on underclassman Yoji Kyogi as her next meal, but he falls for her instead, and Kanan finds herself agreeing to date him. Centuries of demonic experience leave her completely unprepared for hand-holding, jealousy, and the rest of an ordinary high school romance.