Board Thread:Naruto Discussions/@comment-1018594-20160409062530/@comment-734582-20160827120409

Ravenlot 27 wrote: Besides, during the discussion in this thread, I got an idea on one more epiphany. Yea, that seems logical. Especially since we saw the Juubi drain chakra from shinobi (at least, when in tree form) making them the physical requirement seem logical. And the Genjutsu part is to keep people from trying to escape.