In a world where magic is an everyday fact of life, just about everyone is able to use it... Well, except Luca... She has to rely on her older brother Glen and the young beastman Abel. She's still trying, though, because her goal is to be as great a witch as her incredible mother. One day, a mysterious, black-robed witch claiming to be an acquaintance of Luca's mother gave her an unusual fruit... "Take a bite and your true powers will awaken." And Luca did just that. The moment she did, however, something strange happened to her body. That's how Luca discovered she was the daughter of an incredibly powerful demon. The fruit undid the seal her mother had placed on her powers, causing her magic to run wild and endanger her life. While Glen and Abel were able to temporarily neutralize her massive reserves of magical energy via sexual intercourse, the only way to keep herself under control permanently is to become a first-rate witch. And so begins Luca's training... She travels far from her home in the mountains, and takes up residence in the Witch's Castle on the outskirts of the royal capital. There she meets Zagan, a prince of Hell who is first in succession to the throne And here in this brand new place, a brand-new world of sensual pleasure will unfold...