Hiding The Archduke's Humiliating History

after dying in a mysterious accident, eisel reincarnated in another world. a strangely familiar name and events heard from various places made eisel realize that this is a world in a book. eisel collects clues one by one and traces which book the world has been deceived. but, what is the world in the epic fantasy novel where destruction is just around the corner?! let’s fill up some warehouses with canteen sales and save the empire from destruction, so let’s live for a while! but then, she didn’t know that she would keep getting involved with this guy by saving the life of a young man once…