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This technique allows the user to hover multiple kunai in the air with their chakra, and direct them to an opponent. Using this technique, the user can unleash a torrent of kunai much more quickly than if each one was thrown individually.
Chiyo performs a variation of the technique by using the strings generated for the Puppet Technique to control discarded puppet weapons for herself. Ekaterina Kiroshika could also perform variations, including non-puppet weapons of varying types into an arsenal of manipulated weaponry.
Haruka Sakumi has attained such mastery over this technique that she is able to control hundreds of kunai and shuriken. By channeling her wind chakra into the blades, she vastly increases their cutting power and lethality.