Heavenly Jewel Change - Chapter 759

What happens when a scientist from a futuristic world reincarnates in a World of Magic and Knights? An awesome MC is what happens! A scientist’s goal is to explore the secrets of the universe, and this is exactly what Leylin sets out to do when he is reincarnated. Dark, cold and calculating, he makes use of all his resources as he sets off on his adventures to meet his goal. Face? Who needs that… Hmmm… that guy seems too powerful for me to take on now… I better keep a low profile for now. You want me to help you? Sure… but what benefit can I get out of it? Nothing? Bye. Hmmm… that guy looks like he might cause me problems in the future. Should I let him off for now and let him grow into someone that can threaten me….. Nahhh. *kill*-

Alternative: Leylin is transported from an advanced technological era into a medieval world— except there’s magic. Equipped with “only” his quick wits and an A.I. chip fused to his soul, he sets out to become the most powerful magus the world has ever known. In a land divided into the Light and Dark Magi, the weak can either be cattle or disposable slaves. Only the strong can determine their lives, and only they have the luxury for virtue. Yet strength is only a tool for Leylin, like any other. His goal, in the end, is his own.

I am Ye Qing. Lucky I found a [Monster Factory] application.

In the cyberpunk era, corporate alliances dominated the world, and both the humans and witches were ens*aved by advanced technology, becoming nothing more than fuel for society. Unwilling to become a company dog, Xu Yang decided to run away, while saving the cute and powerful witches from the giant enterprises, together they embarked on a road of innovation!

- Description from Novelupdates

Zhou Mu finds himself remaining in a single-player VR game despite having decided to quit after platinum-ing the entire game. However, he realizes that the world has completely changed. Realizing life in the game is better, he continues on with his in-game name, William Kane.

“Why is the world united under my name? And what’s with the religion that honors me as their god? The royals are claiming to be my descendants? Was there ever such a function in the game? What have they done for the past 1000 years when I was gone?”

Zhou Mu was completely lost.

“Are you calling me a traitor? Aren’t you guys the ones who have been doing evil deeds in my name? Behold, for you shall witness this lost forbidden spell!”