The Kaginawa is a Japanese device composed of a metal hook attached to a rope. Historically used by ninjas, it was used to scale walls, secure objects, and as an escape tool. The hook allowed you to hook on surfaces and pull the rope to go up or down easily. Furthermore, in infiltration operations, it could be used to open closed doors from the outside or create improvised traps. Its versatility and usefulness in tactical situations made it an essential tool for ninja skills in the art of stealth and infiltration.