Rich Family's Substitute Sweetheart - Chapter 17

The Gura Gura no Mi is known as the strongest fruit in the world of one piece.

During the years of study, no one would associate Jiang Huai with Mingshuang. Mingshuang is the school flower, always at the center of the situation, rich and beautiful, and arrogant. Jiang Huai is always No. 1 in the affiliated high school. The boy’s family background is not good, but he is handsome and indifferent, and he treats others with restraint and alienation. Only Mingshuang knows what he looks like in private. One summer night after the college entrance examination, under the camphor tree…

- 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.

In a zombie apocalypse world, Earth has become a place inhabited by people with twisted hearts. In a dog eats dog world, she struggled to survive and witnessed the deaths of love ones until she met her own gruesome death.

But she was reborn, she was back to the beginning of the end. She held a divine sword: meet a god, kill a god; meet Buddha, kill Buddha! Regardless of which methods, she will use anything in her disposal in order to protect her loved ones!

He is gentle as jade, just like his name. Despite his extremely poor shooting skills, he can make powerful people follow him faithfully. He has an army in his hand, and his power shakes the world.

They are two people who have never met in the previous life, yet their paths kept intertwining in this life. Is it fate? No, for Bai Ling, maybe it’s an evil one!

- Description from Novelupdates