Dungeons. A romantic setting. However, that's only for adventurers. Cleaning, replenishing supplies, and dealing with complaints. Aine and Nacht work hard behind the scenes as floor staff in the dungeon. "...Damn adventurers." The dungeon staff now turns its fangs on the adventurers who gather together while not caring about the troubles of others! The unique and exciting horror, fantasy of a different world begins!! (Source: Kadokawa, translated)