Ashe is a princess from the demon world, but unlike most ladies in that realm, she is a pure hearted girl with very little magic powers. Since she is not a suitable heir, her father has to find successors to the throne from outside the family.
After extensive searching, the demon lord located a pair of twins Leni and Sage with enough powers to govern the demon realm. But ambitious lords are not too happy with the decision and attacked Ashe. The innocent girls manages to escape to the human world, to the realm of the twins, alive, but will she be able to escape from the charm of the twins with her heart intact?