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A kama is a Japanese sickle used as a weapon. It has a short handle and a pointed beak with a sharp cutting edge that inflicts damage. There is also a variation of the kama, a kusarigama, which has a chain attached to it for increasing its attack range.
Unlike its traditional intended use, the kama has been most commonly observed being employed by shinobi as a throwing weapon rather than in close combat, where the entire weapon is tossed in such a manner that it rotates quickly end over end, to increase the probability that the bladed edge while strike its intended target.