Board Thread:Theories and Speculation/@comment-26704954-20150821182356

A legitimate question. Insofar as I know, only Tailed Beasts have ever been sealed into a shinobi (thus allowing access to the Tailed Beasts powers). However, we have seen shinobi sealed before, such as the first four Hokage's spirits being sealed and eventually released.

Would it be possible to, say, seal Sasuke into Naruto? Could Naruto then enter Sasuke-Mode? Or perhaps, to counter the threat of Juubi-Madara, they seal him into Sasuke. And because of this, Sasuke can enter Madara-Juubi-Cloak-Mode.

Just a theory. It sounds silly, but could it work? 