Producer System: My Girlfriend is a Cellist - Chapter 195 - 163: The Battle for Revenge Begins!

He lived from BC to the Middle Ages, from the Renaissance to the Industrial Revolution, and from Cyberpunk to the Interstellar Age. He has been a king and a prophet, a knight and a nobleman, a versatile artist, a genius inventor…
This is a four-thousand-year human epic——
“To us four thousand years from now:
“Is the world at peace? Is famine extinct? Can people touch the stars? How long is the human lifespan? How far is the boundary of the earth? Human…do you remember us?”
——Excavated from Earth Age Tenth Century BC, Solomon Prayer Book.

- Description from novelbuddy

Son of a bitch! I just finished this godawful fantasy novel, and now I'm knee-deep in it – as David, the disgraced son of the Solarian Empire's top general! Talk about some twisted cosmic joke. But hold on a damn minute... maybe this isn't all bad. Armed with the knowledge of that trashy plot, I can become the ultimate shadow player, an overlord perhaps. Screw the damsel-in-distress harem too – it's time to pull the strings and become the real power behind the throne. This isekai might be a steaming pile, but I'm rewriting the ending with a little more... Debauchery (wink wink).

Lieutenant Jack Fritz is a self centered American man of German descent. He like many joined the United States Navy in hopes of getting an easy life and easy money. In fact getting money and taking it easy is all he has ever really wished for in life.However life seems to have other plans in-store for Jack as he suddenly finds himself at the beginning of World War 3. Though his fight does not last for long as he is suddenly blown to bits by a missile and sent into the afterlife, but instead of going to heaven Jack is dragged to another place where he is given another chance at life by some fiery demon for a price.Having been given no other chance Jack does as the demon says and earns himself life again. Though he doesn't return to his original world, but a medieval one. With no guidance and no higher purpose given to him he simply decides to do the best that he can within this new world of his. This time he will for sure earn that perfect life of his and possibly a lot more.But little does Jack know his fate is not his own and there are many sinister things in-store for him. Also the world he finds himself in is not a safe or simple medieval world, but one beset by dangers from all sides that are already little by little driving humanity towards its extinction.

Gu Fei, a rookie who has not survived three episodes in the apocalypse, traveled to ancient times with space and became a girl in the Hou Mansion.

As soon as I arrived, my house was ransacked and sold.

​​It was finally bought back by her family. After three years of severe drought in her hometown, there was no harvest. Gu Fei and her family fled the north.

Along the way, countless people died of hunger. Gu Fei: Don’t be afraid, there is food in our space.

Bandits and refugees were rampant on the way forward. Gu Fei: Don’t be afraid, we have weapons in our space.

After all the money was spent, Gu Fei led his family to farm and open an inn to make a fortune, and by the way, he gained a little overlord’s crown prince.

The innocent prince: My wife can always conjure up many strange things. My wife must be a little fairy.

- Description from novelbuddy