Board Thread:Naruto Discussions/@comment-1926479-20140528055515/@comment-17623-20140528152002

Actually, think about it. Madara's story stated that the Ten-Tails appeared after Kaguya ate the fruit and used chakra to end the worlds wars. Yet we have no stories of her dealing with the giant rampaging world monster. Her entire story was about her stopping the wars, then getting scary and evil using violence to keep everyone from fighting.

What if the Ten-Tails never showed up until after she died? She died and her will and ego is what gave the Ten-Tails life so that it could reclaim her chakra.