Crossing the Starry Sky Railway, Jiang Chen discovered that his start was not so pleasant.

In the secluded pavilion, the pink-haired girl who loved sitting on the swing smiled as she watched the boy descend from the sky.

Then he obtained a simulation system.

In the simulation, he was the most unsuccessful student of Zandar, and also a traveler trying to correct his teacher's mistakes.

He is also a wise king who fought against the Black Tide, and a rebel in these thirty million reincarnations.

This book is also known as "I Do Whatever I Want in the Honkai World," "The Herrscher of the End Wants Me to Build a Harem," "Honkai Simulator? I'll Go For Real," "Challenging Seven Valkyries in One Night," and "Durandal in Training." As a white-collar worker, without shaving, I came home from get off work to find a beautiful girl I'd picked up. It turned out to be Kiana, my wife whom I'd watched grow up?! After living with her for a while, I was transported to the Honkai world after the main storyline ended. Surrounded by Herrschers and S-rank Valkyries, my work turned into spending every day with my wife?! And what's even more outrageous is that they, whom I have a lot of affection for, actually want to help me grow my harem?! Every morning I wake up to see Mei on my left, Yuexia on my right, Airi at my left foot, Rita at my right foot, and a big duck in my arms! Then I try every possible way to "act unreasonably," but they all willingly satisfy my unreasonable demands. Even if I said Mei was bouncy in front of Kiana, let Bronya answer the phone while I was on a date with Seele, and even made Ellie only watch me and Eden...

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!

"Damn magical girl, don't underestimate the bonds between us villains!" Dawn said, glancing at his companions.

The organization's leader is actually a magical girl who traveled back from the future, and she's trying to persuade him to surrender.

The taciturn girl that the eldest brother took in has now been recognized and transformed into a magical girl;

His buddy, who called him brother, wasn't a magical girl, but this buddy had a female brother who had been whitewashed into a magical girl, so he was whitewashed too;

"Come on, it's your turn to get cleaned up!" Looking at the kind-faced crowd, he had no choice but to say:

"Quack, don't come near me!"