User blog comment:Water Dragon Slayer/DREAM BATTLE CHRONICLES: SECOND MATCH!/@comment-4829046-20130724065721/@comment-7418318-20130725095025

Originally there was only the Juubi, so I guess it used to be a single mind.

But now the split parts of it have had seperate personalities for centuries.... I wonder how well they melded together after being individuals for so long.

One way to resolve this whole matter would be the bits of chakra that Obito got from the gold and silver brothers and Hachibi's horn running out. With two of the bijuu "missing" from the mix, maybe that wannabe Juubi will come apart into the individual tailed beasts again.