A Shut-in High School Student Reincarnates in a Game World as a Villainous Aristocrat – The Worst Villain Who Cuckolds and Kills the Heroine, but When He Aims to Become the Strongest Mob Using His Knowledge of the Game, He Is Doted Upon by the Beautiful G

High school student Akatsuki Nagaminewho has been playing video games and staying indoors instead of going to school, finds himself reborn as Salva Saku, a nobleman villain in the epic RPG “Deus” series. He sees this as a chance to start his life anew, but the fate that awaits Salva in the original story is far too much: he cuckolds the heroine Ciel, who was in love with the protagonist, kills her to take her power, and is ultimately killed by the protagonist. To be frank, he stopped playing when he was spoiled about the cuckoldry, so he only saw the rest of the story on the Internet. If things continue as they are, the protagonist will kill me after I do the worst possible thing. I need ...