Mistress Of The Evil Forest - Case 168: The case of a doppelganger.

Office worker Leon is reincarnated into a particularly punishing dating sim video game, where women reign supreme and only beautiful men have a seat at the table. But Leon has a secret weapon: he remembers everything from his past life, which includes a complete playthrough of the very game in which he is now trapped. Watch Leon spark a revolution to change this new world in order to fulfill his ultimate desire…of living a quiet, easy life in the countryside!

Xu Yangyi, an 18-year-old high school student, for the reason that his older twin sister eloped with her girlfriend on the wedding day, was forced to be the surrogate bride by his own father. As a result, he became the wife of the man who should have been his brother-in-law.“You’ve gotta look at me carefully. I’m a man.” Xu Yangyi glared at He Jingyan, who was still getting fresh with him though he already knew Xu Yangyi was indeed a man.“Man?” He Jingyan fiddled with Xu Yangyi’s face with his big hand and gave him a sly smile, “You look identical with your sister, so it doesn’t matter!”

One week before the destruction of the earth, Xiao Yu fused his soul with the main computer of an interstellar spacecraft, and fled before the destruction of the earth.

After the integration with the computer, Xiao Yu possessed the powerful computing power of the computer, but also possessed powerful innovation and exploration capabilities as a human being. As a result, the humble interstellar spacecraft in which Xiao Yu lived began to continuously evolve from a chemical engine to a nuclear power engine, and from a nuclear power engine to a positive and negative material annihilation engine. The volume and mass also began to increase. Big.

With the continuous development of science and technology, Xiao Yu also began to try to build a true interstellar super fleet that integrates attack, defense, exploration, landing, and acquisition …

- Description from Uukanshu

This novel is also known as Master Fu's Mysterious Darling Wife

She is the The Young Miss of Military family Shen, her face is peerless, her temperament is cold, and she is her family’s treasure, but isn’t accepted as one’s child by her mother;

He is The Sole Heir to the top giant Fu Family, his power is unparalleled, indifferent high-born, the captain of the mysterious military force, and the youngest commander-in-chief.

Because of her grandmother’s wishes, she married him at lightning speed. She thought that it was a marriage that she needed, but she didn’t expect to be greeted with his extreme pampering.

- Description from Novelupdates