For the most part, this chapter can be summarized in one sentence: Kakashi “kills Rin” and Obito goes nuts. Because, that’s pretty much all that happens this chapter, as we continue down the flashback route. We still don’t know exactly the reason why Kakashi did what he did, or whether or not that’s even Rin or someone controlling her, but it is notably hinted at that she’s particularly valuable to the Mist ninja after them. Furthermore, it’s more notable that they’re going through such lengths to recover her body, even though they seem to have preferred that she stay alive. In turn, it makes me wonder if there’s the chance that she was killed in order to ensure she doesn’t fall prey to the enemy or something of the sort.
Either way though, we finally find out the moment where Kakashi awakens his Mangekyou… which is surprisingly at the same time that Obito does. We also get the reveal that Obito is able to utilize a fair amount of his powers to begin with, which while farfetched, does at least try to explain where/when Obito acquired his time/space jitsu. Of course, him just so happening to have the potential to unlock it in such a quick time isn’t the greatest explanation and is bound to annoy a fair portion of people out there, but at this point, it’s nothing particularly out of place considering some of the other events in Naruto so far and works of a shounen nature.
Moving on, it sure looks like we’ll get even more flashbacks in the coming chapters, and hopefully, the chapters’ll give us some more insight into exactly why the aforementioned events occurred and what happens to Kakashi immediately after. Until then, looks like all we’ll get regarding Rin are a bunch of theories… sadly. At the very least though, we get a few reveals and explanations to whet our appetites.