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This technique is a high-speed movement technique, allowing a ninja to move short to long distances at an almost untraceable speed. To an observer, it appears as if the user has teleported. A puff of smoke is occasionally used to disguise the user's movements. It is accomplished by using chakra to temporarily vitalize the body and move at extreme speeds. The amount of chakra required depends on the overall distance and elevation between the user and the intended destination. Shisui Uchiha was feared as "Shisui of the Body Flicker" (瞬身のシスイ, Shunshin no Shisui), likely referring to this technique.
The different hidden villages have variations of the Body Flicker Technique, all of which involve some extra element aside from the movement itself. The extra element is usually some sort of substance used to distract the opponent, such as leaves or sand. Gaara, for instance, uses the Sand Body Flicker (砂瞬身, Suna-Shunshin), which uses sand to cover his movements. Other varieties include the Mist Body Flicker (霧瞬身, Kiri-Shunshin), Water Body Flicker (水瞬身, Mizu-Shunshin), and Leaf Body Flicker (木ノ葉瞬身, Konoha-Shunshin). The Fourth Raikage combined the Body Flicker Technique with the Lightning Release Armour which allowed him to dodge even Amaterasu in a split second.
Ace Korimachi uses his kekkei genkai, EMS Release, to create (放射瞬身, Denji-Shunshin) to travel any distance instantly, making it the most effective variation of the body flicker technique. To the user of the Denji-Shunshin, it's as if time has stopped, but to the observer of the Denji-Shunshin, it's as if Ace was never there. When Ace uses his hiden jutsu, Instractive Phasion, with his Denji-Shunshin, he can infiltrate any village completely undetected, as his Interactive Phasion technique makes his chakra undetectable even by Kryonosis, the best tracker summon in the world, and the Denji-Shunshin allows his to travel instantly to his target, allowing him to grab what he needs and get out, literally in an instant.
Kosui's usage of the Body Flicker Technique relies on her enhancing it with her water release. Instead of creating a puff of smoke, she creates a puddle of water, making it seem like she burst into a body of water, which is more than enough to fool lesser shinobi into a deadly trap.
Kane's mastery over the technique, allows him to teleport without even having a puff of smoke appear.
Raiku Uchiha's mastery of the Technique, combined with his Impulse make his speeds match that of the Flying Thunder God Technique, except his speed gets a little slower than the latter when transporting to longer distances.
Kodoku is able to increase the speed of the technique with Senjutsu, moving with incredible speeds and not slowing even with longer ranges.