Wolf of the Blood Moon: A Blood Magic - Chapter 46Book 6:

The future unfolded on a magnificent scale into the Interstellar Age. Humanity finally solved the space warp technology, but when humanity transported themselves into the other end, they discovered that place neither had a past nor future, nor was there any land under the starry skies……

“Had that night been quiet and windless… If she had never appeared in front of me…”

Whenever he recalled the past, Clyde felt endless regret. If he had known that being a Suzerain would be so troublesome, he would have never picked up that troublesome Bloodkin. In fact, he would never have even left that secluded Death Canyon.

“Big Brother Clyde, don’t be so dejected. You are now a well-known Suzerain, a hero of the entire continent, the Human Race’s Savior!”

“Lucifer, enough. I just want to return to my quiet life.” Clyde, an Evil God, had yearned for a quiet life, but by chance— or fate— he had met a young a mysterious Bloodkin Lolita named “Lucifer.” Under her guidance, Clyde embarked on his destiny, rising from the unknown as a nameless wanderer to become a Suzerain of a fief before taking the throne of the entire Ximengsi Continent.

There was just one problem: he who would be the torch of the human race wasn’t even from this dimension.

Everyone rumored that Z country’s young master Jun was cold-blooded, decisive, and not close to the female gender, but he took in an illiterate little girl as the pearl in the palm of his hand.

However, the little girl brought her case to the table. An illusion, it was all an illusion. What not close to the female gender? Which animal was crushing her every night?

“Baby, let me love you.” The man undressed her with his lips. She retreated pitifully, “Don’t want, don’t want, you’re bad.”

“Women love bad guys.” After eating he turned around to wipe his lips. She kneaded her pitiful little waist, tears falling, “This one is not a woman, she’s just a little mermaid.”

- Description from Novelupdates

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.