Fifteen-year-old Raim lives in a world where you tie a knot for every promise that you make. No one knows where it came from, and which promise of his it symbolises, but he barely thinks about it at all - not since becoming the most promising young fighter ever to train for the elite Yun guard.

Fifteen-year-old Raim lives in a world where you tie a knot for every promise that you make. No one knows where it came from, and which promise of his it symbolises, but he barely thinks about it at all - not since becoming the most promising young fighter ever to train for the elite Yun guard.