Elf Tensei Kara no Cheat Kenkoku-ki - Chapter 1Book : -2: Cyril of the Elf Village

The Jiang family, a wealthy family in Jincheng, adopted a pair of sisters. The younger sister Jiang Fanyue is sensible and generous, with both talent and beauty.

The impoverished biological family came to the door, and the Jiang family couldn’t wait to pack Jiang Zhe away, leaving Jiang Fanyue behind; family property, reputation, the identity of the eldest daughter, and fiancé, all have nothing to do with Jiang Zhe from now on.

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Jiang Zhe stepped into the door of his house with suspicious eyes. Are the precious famous paintings of the Tang Dynasty hanging on the wall authentic? Is the bowl that holds vegetables and soup an orphan made of gold wire enamel?

What about poor families?

What, there is also a fiancé of the top wealthy family in the capital?

Can she break off the marriage?

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The boss blocked her against the wall and wrapped her in his arms: “What do you think, Madam?”

“My grades are so bad that I fail all of them, and I don’t deserve to be in a giant.”

The boss turned out her full-scale college entrance examination paper.

“I’m nothing, nothing.”

The big guy lifts off her magic doctor, designer, hacker, composer… and other small vests.

He was small and gentle: “I work hard to be worthy of the lady.”

[I have no desire or desire since I was a child, but when I saw you for the first time, I prayed to the gods and Buddha for a moment, I want to beg you – Qin Jingchen. 】

- Description from novelbuddy

Xue Xi is forced to fall in love at first sight with this dangerous man on their first meeting. With death being the only other option, she makes the first move:

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.

Su Wan is a Realm Destroyer. She shuttles to different time-spaces using the identity of the “Cannon Fodder Ex-Girlfriend”, dedicated to plotting how to happily tear apart the male protagonist and the female protagonist. –There’s no such thing as protagonists who can’t be torn apart, only Ex-Girlfriends who don’t work hard enough~

- Description from Novelupdates