"Rui has one goal in mind--honing her magic to avenge her mother's death. Yiran is the black sheep of an illustrious family. The world would be at his feet--had he been born with magic. Nikai is a Reaper, serving the Fourth King of Hell. When his master disappears, the underworld begins to crumble--and the human world will be next if the King is not found. When an accident causes Rui's power to transfer to Yiran, everything turns upside down. Without...