Kama The Kama is one of the Okinawan weapons. It evolved from the farmer’s sickle. Kama have a short wooden handle with a curved blade, and are usually used in pairs. They are a particularly versatile and deadly weapon when mastered, and are particularly effective against long weapons like swords and Bos. Sometimes a chain or rope will be attached to the handle to make a throwing weapon. Because of their small size, ease of use, and effectiveness, they are a very popular stealth weapon.