Wow, so 2 weeks and you can do a Bjuu transformation, and apprently retain a huge chakra storehouse. I still say that's rather odd.
I said it when this battle started that it was very reminiscent of a certain Captain's shikai in Bleach, glad to see POW agrees.
Probably most significant for me is that Kakuzu has ALL his hearts and he's not just on his own as some others wrongly predicted. ALWAYS epic seeing that guy, he kicks ass and is totally underrated.
Really wish they'd just leave Darui's comrades dead instead of some way to free them. It's a war, there should be casualties and if Kishi can't kill off these side characters, then there's a problem.
Overall, pretty cool chapter, no way any Storm Element is going to save him now, time for backup.