Lu Nan transmigrated, becoming a nobleman—though his territory was so small it couldn't even be found on a map, and his debts were enough to crush a demon. Just when he thought his life in this other world would be a choice between "bankruptcy" and "being stripped of his title," he picked up… well, or rather, was "picked up" by a girl? This girl, who called herself the "Book Witch," was incredibly knowledgeable but had zero common sense, possessed explosive combat power but was too lazy to fight, and her greatest hobby was immersing herself in piles of books, and she justifiably treated Lu Nan as her "personal mobile bookshelf and meal ticket."

“Lunan, Chapter Thirteen, Section Four of this book mentions a solution to your territory’s predicament, but the book is too heavy. Could you bring it to me?”

"Lunan, a monster? Wait, let me check which bestiary contains information about this kind of monster's weaknesses..."

Thus, Lu Nan's adventure began with becoming a page to the witch! While paying off his debts and searching for treasure, he also had to replenish the "new books" for this living library.

This is a lighthearted (?) adventure story about a young nobleman and a knowledgeable witch who travel to another world together, using "books" and "wisdom" (and a tiny bit of martial arts) to explore!