Board Thread:Naruto Discussions/@comment-8284722-20141222195100/@comment-8284722-20150107135934

As I said, Naruto destroyed the third and fourth of Kakuzu's 5 hearts, even though the fifth was by Kakashi. Madara, meanwhile, died from the extraction of all the Tailed Beasts and the Gedo Statue (which was done by Naruto and Sasuke), not when Black Zetsu stabbed him. As for the kaboom, that's not finalized. Eventually, it goes that she and Black Zetsu are destroyed when they are in the seal. How exactly they die is unclear for me, but my top choices are that there is the big kaboom or they suffocate inside the seal. Regardless, they die, since even if they come back at some point in the Naruto Project, they don't in the manga, which is the only thing getting adapted, and as such they needed to go as a good conclusion.