OK here we see Obito's other half of his body crushed by this boulder.
Here we see Tsunade cut in half by a wood branch
Now look here to see Obito having survived the crushing of the boulder
Whoever says Tsunade is going to die think again.
You guys remember the fight between Hashi and Madara and we all thought madara died but he didn't. Now we look at
what Madara did to Tsunade, Madara thinks she's dead for what he did to her but she's not and she will continue to live.
But seeing what Madara did to the kage's means Kishi wants to Hype Madara's strength and that's it.
One(Madara) vs Five(5 kage) = DragonBallZ type sh!t
Trust me guys she's not going to die. She's the best healing ninja of all time plus she's going to show how bad ass she is and heal the kage's then herself and probably return to the shinobi headquarters and let Naruto handle the rest.