Board Thread:Naruto Discussions/@comment-26107879-20181004003653/@comment-34194151-20181008215329

@Loneninja.

Subsitution and body flicker are supposedly parent and daughter jutsu but there is more to that than meets the eye. We have seen characters who were immobilized using substiution to free themselves, such as animal path of Pain using substitution to escape Jiraiya's lion mane jutsu. Logically, a restrained target can't use body flicker, so this won't go down a logical road. Itachi was impaled by kabuto's sword and yet he reappears behind him. There isn't much consistency in how the jutsu works. Even the gaara situation is complicated, because kakashi attributed gaara's substitution to rock lee closing his eyes. In the second rock lee closed his eyes due to the pain gaara activated substitution and left a sand shell in his place. rock lee simply didn't notice it.

Well that's the issue. How do we know when characters are using body flicker or not? There is no reliable or consistent indicator. Killer bee crossed a mountain in an instant yes, but that feat was a clear outlier. He hasn't used that kind of speed again. leaving two possibilities, either ninja don't use body flicker all the time or kishimoto is inconsistent. The idea that ninja don't use their body flicker all the time opens a troublesome can of worms. That whole debate about obito and kcm naruto's relative speed falls apart, as it would mean those shinobi weren't using the body flicker during their battles. I myself actually used to think that body flicker wasn't used that often, given that we have only seen A4 and Shisui really being known for their usage of body flicker in battle.

So, this body flicker thing opens up another can of worms. And as I said before, the chidori can still be used as a sharper kunai in CQC. The issue comes when you start running with it at your top speed or while using the body flicker. that's when the tunnel vision happens. nothing is stopping sasuke or even hokage kakashi from weaving handsigns and creating chidori in their hand. the issue has always been the running speed with the jutsu.

And as for chidori creating tunnel vision even though it's only in one arm, again anime logic. It doesn't make logical or intuitive sense, but that's how kishimoto designed it. I would agree with your argument if it wasn't clear from Kakashi gaiden that the technique's speed causes a problem for the user, to the point minato basically banned kakashi from using it again. He didn't tell kakashi not to run a straight line. he didn't tell kakashi not to use the body flicker. he said don't use chidori in the context of not being able to see the opponent's counter.