SPOILER:
The story loops. Basically, it is a story about an NPC in a game. So in the end, when you "fall asleep" you "wake up" (or being summoned to "life") again, as new players begin their journey in the dungeon.
So the point is that your story (as a part of the game) never really ends :)
P.S. That is relevant, if you made it to the end, where the whole party of adventurers dies.