<p>Chidori is a lightning jab. Raikiri is a faster one. The show deals quite a lot with the concept of exertion, this is a very draining technique because Kakashi is exerting 100% of his speed. Which in turn grants him tunnel vision (he's running at his body's maximum speed which is faster than his own perception) causing Minato to tell him to abandon the technique. The jutsu's power is directly related to the users speed. Simply covering your hand in lightning is not a jutsu, kid Kakashi could only generate enough power to make chidori an A-rank jutsu by increasing his momentum strengthening his lightnig jab (increased momentum = increased destruction, this is what makes Raikiri S-rank as opposed to chidori's A) . </p><p>... if chidori increases Sasuke's speed how fast is everyone who has grabbed his wrist while using it, Itachi deflected it into a wall then broke Sasuke's hand, Kakashi redirected Natuto and Sasuke's attacks into water towers </p><p>That being said the cutting nature of chidori would practically erase wind resistance (drag) so they would apear to move faster as their speed would no longer be dampened running into air molecules. </p>

<div class="quote"><i> <p>LoneNinja wrote: </p><p>Obviously the Eighth Gate didn't show case Tunnel Vision simply because a) he can handle that speed </p> </i></div>
<p>And Chidori/Raikiri users cant handle Chidori/Raikiri's speed. Which is why they get tunnel vision without the Sharingan. </p>

<div class="quote"><i> <p>LegionZero wrote: </p> <div class="quote"> <p>LoneNinja wrote: </p><p>Obviously the Eighth Gate didn't show case Tunnel Vision simply because a) he can handle that speed </p> </i></div>
</div> <p>Or b) the gate of pain increases chakra flow to the spinal cord enhancing his perception by flooding his nervous system with chakra along the lines of Lightning Release Chakra Mode, Lightning Strike Armour, Lightning Release: Overdrive, etc minus lightning nature obviously </p>

If chidori/raikiri has an effect like tunnel vision what would be the cause if not a speed boost?

<p>Because the technique requires the user to move at top speeds for its best effect. Running at top speeds, especially when capable of breaking the sound barrier, would lead to tunnel vision. </p>

Low tier chuunins break the sound barrier easily.

<p>@Aboo </p><p>Running fast. Lol. </p><p>If Chidori boosted speed, why is it stated to only be concentrated in the arm? </p>

<div class="quote"><i> <p>Littlegen wrote: Because the technique requires the user to move at top speeds for its best effect. Running at top speeds, especially when capable of breaking the sound barrier, would lead to tunnel vision. </p> </i></div>
<p>Rasengan doesnt have this issue and Naruto charges in a straightline dash with it. </p><p>The user could also simply not run so fast when they use it so there is some property to it that makes it difficult for the user to run slower once it picks up momentum </p> <div class="quote"><i> <p>LoneNinja wrote: @Aboo </p><p>Running fast. Lol. </p><p>If Chidori boosted speed, why is it stated to only be concentrated in the arm? </p> </i></div>
<p>Why do you associate speed boost with chakra in the the legs. Jugo literally creates chakra jet thrusters to move faster and this doesnt concentrate chakra in his feet. </p>

<p>I associate it due to the fact that Chidori isn't a jet thruster and we're talking about movement speed. How does concentrating Chakra in your arm, make your legs move faster? Last I checked, Chidori doesn't get shot out from behind the user like jet thruster, so that's irrelevant. So far you have failed to explain how concentrating the chakra within the arm, boosts one's movement speed and instead, resorted to trying to change the subject. </p>

<p>I dont have to explain chakra in the feet because thats not the point im making, it never was if you paid attention to what i have been saying. </p><p>Chidori has its own momentum. Which is why Kakashi says it is fast. This momentum causes the user to move faster than they would without Chidori's momentum. </p>