Island of 1,000 Condiments

Itachi's eyes change.

That's not different than powering-up, in a sense.


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Pure speculation.

Kakuzu rips his victims chest open, removes the heart, and leaves his prey's corpse on the ground to rot. Zetsu eats others, living or dead. Sasori's victims become his puppets. Kisame shaves his victim's skin off for a slow & painful death. Therefore, they are immune to Genjutsu, too? Your logic there is flawed.

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