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- Apr 13, 2013
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Bee was caught in genjutsu while using a bijuu cloak. It doesn't matter if the chakra they wield is foreign, there has to be an outside user who actively disrupts the chakra of the target in genjutsu, just having passive foreign chakra does nothing.
He was caught with the chakra that he was using at the time. If he discarded the 8 tails chakra and used his own, he'd have broken out without Gyuki.