Long ago, when the land was whole and the people all spoke the common tongue, there was a boy, who was more wolf than man, and a king, born to become a god.
As a Rite of Passage for the Zenin Clan, Megumi is chosen to slay the Beast of the West, the King of Curses, Sukuna. Already an impossible task, it becomes a thousand times more difficult when the King decides that Megumi's worthy of his favor.