After creating a small Rasengan, Boruto subconsciously adds Lightning Release to it before throwing it.
As it glides, the nature transformation abruptly kicks in, which makes the technique disappear out of sight. This adds an element of surprise to the attack, as an opponent may lower their guard, assuming that the technique has dispersed, only to find themselves hit by the invisible attack.
This technique is a lightning style version of the Rasengan (the vanishing Rasengan), that was created by Boruto Uzumaki and named by Uchiha Sasuke.
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