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After throwing a special umbrella that has been equipped with springs into the air, it will release a hailing "shower" of senbon. It cannot be dodged by moving away since the needles cover a wide area in all directions, controlled by chakra. Although the needles were said to be able to pierce a five millimetre thick steel sheet, they can still be blocked by a powerful enough shield. They can also be dipped in poison to increase lethality.