I Am the Nanny of the Villain - Chapter 101:

[You have become the master of the Warden Mansion.][Your first quest is to refine mana from one of your maids by having intercourse with her.]When nineteen-year-old Jett Talon suddenly wakes on an emperor-sized bed, he finds himself lord of a mysterious mansion where countless gorgeous maids stand ready to serve. His first companion is Mia, a blonde elven maid who checks his every box. After making love to her, Jett gains mana, unlocks legendary powers, learns his duties as Master of the Warden Mansion, and uncovers its hidden secrets.

What the hell is this? What the hell happened here?

John has been reading [The Legend of Divine Twig] for years, but at the end, the author rushes through it, leaving him with a bad taste in his mouth. He furiously contacts the author, stating he could have done better.To his surprise, the Author replied to him with one wordBetJohn has been plucked from his room into the world of the divine and wretches. He enjoys reading the novel but he wouldn't want to be in it. The world is full of hotel knights, priest, mysticism and worst of all eldritch horror.

The romantic comedy light novel series centers on the gaming lives of various high school students who play video games, including: Keita Amano, a lonely young man who loves video games; Karen Tendō, the beautiful president of the video game club; Chiaki Hoshinomori, who constantly fights with Keita; and Tasuku Uehara, who puts on a facade of being satisfied with his life in the real world, but he in truth loves video games.