Banished Hero: I just want to live in peace on a deserted island - Chapter 76: Manaia’s Plan

To reward Meng Fan for his bravery before his heroic death, the cosmos rewarded him with a ‘system’, sending him back in time to three months ago, alive.

- 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.

Lyra Shedd faced a brutal betrayal—her grandfather violently stole her superpower and handed it to her nemesis; her beloved younger brother, in his stupidity, leaked their only hidden assets to her enemies.Once a genius, she was reduced to nothing, drifting in the sea of stars.During her most agonizing years, she finally accepted the fact that her family didn't love her. Realizing she had nothing left to lose, she decided to throw off all moral restraints and become a villain!On her journey of revenge, she encountered many handsome men—but to a cold-blooded villain, they were nothing but tools for her vengeance!This time, she would make all those who pushed her to the brink tremble and scream for mercy!

“With my knowledge, give me a fulcrum on which to place it and I shall move the world!”