speed isn't counter for kakashi's kamui because his kamui is so so fast
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kakashi here ,warped bm naruto without obito who has sharingan,rinningan noticed the warping and before the stick hit naruto's head although it was nearly touching naruto's hair ,although both of naruto and the stick was going toward the other in high speed and although kakashi was performing another kamui on rasingan
so can you imagine this speed ?
it is like kakashi stopped the time's moving
i'm really think that the one who being warped by kakashi's best kamui ,won't feel to make any reaction ,he suddenly would find himself in the other dimension
even minato i don't see him feel kamui , then think and then use ftg ,even sharingan and riningan users couldn't see it
surly kakashi can't warp minato while he disappears with ftg but he could, if he started using kamui on him before minato use ftg because simply he wouldn't feel ,specially if kakashi warped part of his neck as size as nail(so small)
yata can't
where was the yata when itachi was absorbed by chibaku tenis ?
where was the yata when itachi was affected by tayua's sound ginjutsu?
where was the yata when itachi was affected by kabuto's light and sound jutsu?
it was useless ,do you know why it was useless against these attacks? because it can't defend against untouchable attacks(gravity,light,sound)
kamui can warp it as it is untouchable attack too,all ranges kamui can warp its user without warping any part of yata or susano
it is s/t depend on the concentrating of the mind(like kakashi did when he warped hatchibi although he was inside kuarma cloak,kuaram cloak didn't block kamui)
databook's opinion
kamui is much faster than amatrasu
sasuke himself avoided 2 amatrasu
kakashi warped susano's 2 arrow in no time although his ms was locked
you thread is based on amtrasu and that is fail
amatrasu isn't kamui,kamui isn't amatrasu