I wouldn't be surprise if he is now immortal like hidan![]()
Senju cells provide him with enough sustenance to survive. I imagine his whole left side acts as one big heart.
That one wasnt zetsu atmHis other half is zetsu half.. i think
I can't tell. Also why did Obito start the war if it wasn't for Rin? Did Obito start the war just so he can deny Naruto's ideals?