Board Thread:Naruto Discussions/@comment-24531362-20140831150337/@comment-1512913-20140903213430

Black Zetsu didn't infuse Kaguya's will into Madara to make her take over. Why would he do that, since Kaguya was already inside Madara? Re-read the chapter, you can see it yourself that chakra starts bursting from the ground and enters Madara. Madara turns into a blob because he can't control all that chakra, loses control, which allows Kaguya to surface. All BZ did was force Madara to absorb the chakra.

No will injection or sex surgery crackpot theories.