First, the last time we saw Tsunade:
You must be registered for see images
You must be registered for see images
Tsunade says to heal the Kages. As a Contract, she's bound to listen, and so it's ultimately safe to assume that's exactly what Kats did, started healing the Kages. With their severe injures from their encounter with Madara, there is no way that they could be healed properly in such a short period of time, even with the help of a half-dead, half-bodied, Tsunade. (Yeah, I know, she said 'Bring them to meeee!')
So in other words, based on this latest chapter's last page:
You must be registered for see images
Sakura just summoned Katsu away from Tsunade and the Kages, leaving them hopeless if it turns out Tsunade's already dead. Unless, as many have already predicted, that Oro Suigetsu and Karin are already there, but that has not been confirmed.
Let's imagine a scenario where Oro/Sui/Karin are NOT with the Kages, and Tsunade is already dead after attempting to heal the Kages, whilst Katsu is still trying to heal them, and then Sakura suddenly summons her elsewhere. Would that not technically be dooming the Kages to death? =)
In all seriousness tho, I'm betting next week's chapter, Katsu's just goin to say something lame like
"The Kages are alright, Tsunade and I healed them up to a valid state, but.. Tsunade's dead. Orochimaru showed up and is currently tending to them."
I mean, it's just such a typical Kishi-thing to do..
