Is it possible to put genjutsu on a perfect Jinchuriki? The answer to this question will be extremely relevant to the fight of Naruto vs Sasuke.
We saw with the fourth Mizukage that he was controlled by Obito and he was able to control the 3 tails. If he was just able to control its chakra then it makes sense that a genjutsu could be put on him. But if, like Bee and Naruto, he was working together with his tailed beast, and a genjutsu could still be placed on him, that means a genjutsu could be put on Naruto also.
We saw with the fourth Mizukage that he was controlled by Obito and he was able to control the 3 tails. If he was just able to control its chakra then it makes sense that a genjutsu could be put on him. But if, like Bee and Naruto, he was working together with his tailed beast, and a genjutsu could still be placed on him, that means a genjutsu could be put on Naruto also.