I'm pretty sure it's the prologue.

Honestly, I think the whole ending at 6am thing was meant to try to simulate how the clock in game works, but it wasn't really utilized in the demo. All it did was make you feel like you had a lot more time left in your demo just before you were at the end of it. That's kind of silly.

However, I liked this demo. Once I started grasping what was going on with the battle system somewhat, it seems like it will be pretty fun. The story seemed intriguing enough to make me know what will happen next. Yes, the battles were super easy... but it's the very beginning of the game. The only thing I would have asked for is to maybe have a couple of short sections to pick from rather than just the beginning to maybe give us a feel for a harder battle and to see a more open environment, but eh. I might buy this day 1 now.