MTL - Naruto: The Village is on the Verge of Bankruptcy, I Dug Out the Oil - Chapter 401

After getting forcefully reincarnated into a world of an otome game he has no clue about, the protagonist is then killed and brought back to life by the prideful villainess with one desire.

To rule the world.

As the ruthless girl’s Eternal Servant, how will he dodge the fate that the game system has in store for him?

The hot catch Prince Eighth, also known as General Invincible on the battlefield, surely is favored by God, not only does he carry a big weight in court but he also has a gorgeous face. However, he is crippled forever after a fierce fight on the battlefield…

On his wedding night, Luo Qianqian cracks a cheeky smile at him, “Your Highness, looks like we are going to be sisters for life, nice meeting you.”

Hearing that, Eighth is like, “WTF, who is going to be your sister?”

He put his hands on the wall to corner Luo Qianqian, “My princess, you think I cannot satisfy you in bed, hmm, don’t be so sure about that.”

- Description from Novelupdates

This novel is also known as From The Start, I Traded A Galactic Warship

After getting a trading platform three thousand years later, everything in the world has become an antique, worth a thousand gold.

But it was also learned that three years later, aliens invaded, human beings fell, and the dark starry era began.

In this era of unprecedented change in tens of thousands of years.

Shen Shi decided.

First trade a space battleship, and then talk about it.

then–

Battleships come to the world from outer space! Global shock! Starry Sky Era, open in advance!

- Description from novelbuddy

Our straight (?) bottom woke up ten years into the future and found himself on the bed of his childhood friend… At the start, the bottom was shocked to his very bones, but he soon quickly accepted this premise and found the whole situation to be rather amusing. Precisely then, the bottom once again went back to his timeline — back to when he and the top were just platonic childhood friends.

Landmines include but are not limited to: Sweet & naive bottom, a president story, logic is dead, slow-progressing romance, the protagonist’s name has too many character strokes, the names are hard to pronounce, too many gay characters…

- Description from novelupdates