Guidebook for the Dark Duke

Evan traveled to England at the end of the nineteenth century. A fictional duke and a non-existent place name made him realize that the place he was in was a fictional world, a world in a book, and he was in this world. The most despicable and shameless existence.In order to survive in this world, Evan had no choice but to play the role of a pure priest, step by step to attack the cold Duke, and finally become the winner in life! cp: Gentle and pure on the outside, despicable and shameless on the inside × high-cold, disliked, and upright subject