The Fallen Hero Reincarnates as the Demon King's Son - Chapter 7 - 6 - Preparations

One day, Luo Jian woke up from his sleep and found himself in a locked chamber where the door and window were all sealed. A note with a few lines written on it was tacked to the wall: “Escape from this room within an hour, otherwise, you will die.”

There is a sequel called Reincarnation Night (轮回之夜) that takes place in the same universe but has different main characters

- Description from Novelupdates

[WSA 2025 ENTRY]“What is this for??”Draven, a Pentagon champion, searches for a real challenge that will test his true strength. However, all his opponents bore him.Then, without warning, he's thrown into a magical world. Here, everything your power, status, and even your worth depends on the color of your Status System I.D.His given goal? Protect the Verdant and lift the curse using his skill, the Veilbreaker.Sounds easy for the likes of him?Think again.Verdants are cursed worse than commoners who have not even the slightest ability!He will bleed every time he lifts a curse!And he has to face beasts, monsters, high-breed animals, higher I.D.s and even gods![You unsealed Naisha skill: Stealth][You obtain Stealth skill.]Challenge accepted!

I got hit by a truck and woke up in a world unfamiliar to me.[System rebooting… AI core active.][What can I help you with?]With a hologram screen floating before me, Chat GTP, the pinnacle of artificial intelligence.[Combat mode activated.][Here is the steps to create a atomic bomb.][Efficiency: 99.8%. Shall we proceed with conquest?]And with it, I became the most dangerous man in this world.

Upon entering the world of Genshin Impact, Lucas unexpectedly activates the “Villain Simulator,” forcing him to take on the role of a major antagonist in a simulated reality. His missions include:Bullying Keqing at schoolBlackmailing Shenhe into carrying out various tasksRaising an army of undead to destroy MondstadtAnd much more...To balance the evil acts committed in the simulation, Lucas must earn good karma by acting virtuously in the real world. However, he never imagined that one day, Shenhe, wielding a spear, would confront him in reality:“Lucas, you have committed countless evil deeds. Today, I will kill you to uphold justice!”Lucas: “...Wait, weren’t those just fake simulations?”