I have a few books that I would especially recommend. The first one is "The Host Scum the Villain of the Whole Book". This sci-fi space-time travel novel has ups and downs in its plot. The protagonist is so scumbag that you want to beat him up, and the host has a venomous mouth. It definitely fits the villain novel you are looking for. In addition, there was also "The Villain Boss in the Book is My Father." The subversive plot and the incredible love between the male and female protagonists were full of suspense. It was worth watching. Finally, I would like to recommend "The Supporting Female Character Is Going to Turn the Heavens upside down: The Ultimate Boss Is the Villain." This ancient romance fantasy novel has ups and downs, wonderful stories, and a very unique plot. I believe you will like it. I hope you like this fairy's recommendation. Muah ~😗