I started this series after watching the anime and boy did it not disappoint. This is more than likely the most under appreciated light novel out there right now. It's not your standard cliche light novel self insert story. The characters are well written and believable. The setting is also very intriquing. The background and lore in this series is something else. It's basically a world that was once your standard light novel setting until an HP Lovecraft style apocalypse destroyed all surface life. This isn't a story about the good guys saving the world and everyone living happily ever after. The heroes failed tosave the world long ago and now those who are left can only stave off the inevitable. Even seeming victories come with unforseen costs. Yet through all of this the characters continue to live their lives, mindful of the fact that the world has not yet ended. It's sad, beautiful, and something more people should read.