The Mission: Assassinate the future... or save it? Number Zero is the most feared hitman in the business. But his latest contract is his most bizarre yet: infiltrate the prestigious Orion Magic Academy as a fake teacher named Mr. Solo. His targets? Twelve unruly students from the bottom-tier Class D, each prophesied to one day bring the nation to its knees. To change their fate, Solo must ensure not a single student drops out. But when a mysterious truant named Shao returns to school on the brink of expulsion, the mission hits a wall. A dangerous bargain is struck - Shao will stay in school, but only if Solo teaches him the forbidden art of resurrecting the dead!