Long, long ago, a demon fell in love with a witch. However, the witch loved an ordinary man, and they were united. The demon, having become jealous, placed a curse on the witch’s lineage. As time passes, it is now the present day. Megu, a schoolgirl who has two older sisters, meets an unsuccessful painter, and the two fall in love with each other. However, in Megu’s family there is a curse that “the person with whom one joins bodies will die young,” and Megu, fearing the curse, tries to separate from him. Meanwhile, the shadow of the demon creeps up on Megu and her sisters…