Woo, finally got to finishing chapter 1.  I will preface the rest of my comments by saying that I enjoyed the chapter.  I want to see more of Disk, Key, and what the actual fuck is up with those ponies at the end?  Good times all 'round.  But I feel like I would do you a disservice if I didn't offer more in-depth critique.  So, here's a collection of thoughts I had as I was reading.

First up, on the whole I have to comment that the pacing of this first chapter seems a bit rushed.  It has several points such as the very beginning through the first timeskip that are fine.  That said, there were also a few where I stopped and thought to myself that things were moving awfully quickly.  Best example I can think of that is the raider ambush and subsequent fallout.  It didn't quite feel like it had the impact it was meant to, and maybe this is less of an overall pacing issue and more so with the structure of this specific scene.

This is a much more minor hiccup, but when Disk explained the irradiated rainwater, I felt like it was a bit out of place.  Something like that would have been better placed once they were already inside and had secured safety from the aforementioned rain.  I cannot emphasize enough though that this was the only issue I had with some otherwise great dialogue.

But on the positive side of things, I say again that I like your characters and want to know more about them.  High Roller's quest for them is eyebrow-raising to say the least, as I thought it was going to be a simple job until he mentioned wanted the Crystal Goddamn Heart.  I want to see where your story goes!  Or rather where this story that isn't your story goes!