How To Be A Demon lord: The Former Hero's Journey As A Demon Lord! - Chapter 28 How Are You Alive!?

The truck driver brought Ling Xuan to the parallel world World Blue Star for the year-end award.

Here, the physical body travels to replace Ling Xuan, a senior high school boy with the same name and surname, and obtains a check-in system.

(The introduction is pale, please see the content for details.)

- Description from novelbuddy

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.

Chu Hao was reborn in another world. With the memory of his past life, he embarked on a journey to conquer the heavens and the worlds, and finally became the Eternal Heavenly Emperor.[Rebirth], [Exploration], [Battle]

“Stop following me!” Asher yelled, his patience running thin. He had let it slide for too long because she had done a lot for him. But now she was everywhere, suffocating him.“I’m only trying to protect you,” she responded.Asher sighed, running a hand through his hair. “I need some space, alright? I can take care of myself.”She didn’t budge, and just kept staring at him with that same obsessive look, like she had no intention of leaving.“Is it because you’re strong now? Are you going to leave me because I'm no use to you anymore?” Her voice had turned cold, sharp enough to cut through the silence.“Of course not, you know that’s not the reason…”“Then why do you want me to stop following you?”“I’m just going to the restroom, for God’s sake!” He massaged his temple, clearly at his wit’s end.“Oh, you should have said that earlier.” She giggled, the earlier tension melting away.“I did,” he sighed in defeat.