Humanity's Great Sage - Chapter 539: All That For Nothing

She was a peerless genius in the 24th Century – all she needed was a silver needle and she could practically bring anyone back from the dead.

After an explosion, she crossed over into a strange world; everyone calls her “Miss.” The previous “Miss” before had no contractual spirit, was weak and incompetent, and even the fiancé comes over with a new love and bullies her?

Now that she has taken over, who dares to act so presumptuously around her? With needles in hand, the world is for her to own! Wherever she goes, miracles follow! However, she saved a pest. What was she thinking when she saved that man. His stunning demeanor and impeccable face is a huge contrast to his cruel actions. He tries all ways to win her over.

- 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.

I made a game.