Raishin Akabane and his beautiful companion Yaya enroll at Walpurgis Royal Academy to study Machinart: a dangerous blend of magic and technology. Raishin is a puppeteer capable of using magic to power up Yaya, his automaton, for ruthless battles no mere human could survive.
In the wrong hands, Yaya is a deadly weapon, but the honorable Raishin, despite his mysterious quest for vengeance, takes no pleasure in killing for sport. Instead, he joins forces with a harem of gorgeous classmates to unmask those responsible for a rash of heinous human experimentation. If new enemies and terrible grades don't spell doom for Raishin, he and Yaya might live long enough to conquer the school where magic meets machine!