The user attaches one end of a wire string to a shuriken and the other end to a kunai. The user throws the shuriken at a target, expecting that the target will dodge it. The user then loops the kunai around a tree (or something similar) and throws the kunai, which the target will also dodge. When the kunai reaches the end of the string's length, it pulls the shuriken back towards the target, striking them from behind.
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