The chapter preview pretty much said that Sasuke will be back with Naruto. Just wondering how he's holding off.
You do have a good point. Well I guess we shall see in the next chapter. It's closing to the end of the volume. It's possible that we will see Hokages showing up very soon like maybe two chapters in. I feel like they are hold until Naruto and Sasuke fail or something that change the whole fight.
Random note: Sakura and Obito talk about Naruto and pretty much being motivated by him which they can relate closely. Yet Naruto isn't present. Well, I start to see why once more this setup, though perhaps there's more.
Yeah the way the story is progressing right now I would be willing to bet that next chapter will be of them reuniting at the end. And at chapter 687 would be of them returning to the real world and the Hokages coming into the fight.
Main reason why I think this is because BZ explained that the World Transformation technique they are using uses a considerable amount of chakra and now that they found a way to escape that technique it would be pretty much useless to use it anymore and reserve more chakra for themselves back in the real world

lol
Random note: let that Rin Parallel BEGIN!!!! XD lol