I will keep saying this until people get it:Isn't preta path vs. Kamui kind of a contradiction?
I mean kamui "can't be defended against"
Preta path can "absorb any Ninjutsu"
Kamui = Ninjutsu. (Preta path absorbs ninjutsu.)
Preta path = defensive mechanism (kamui can't be defended)
But technically preta should be able to absorb the chakra out of the portal thus rendering it useles. :shrug:
Kamui can't be absorbed because its a s/t jutsu-a reality altering jutsu-and can't be defended against unless there is another s/t involved or someone puts something in front of him to redirect his focus.
Preta path absorbs chakra that is outside the body. Kakashi doesn't release chakra when using kamui, and therefore, it can't be absorbed.