Taming my Monster Girl Harem from Scratch - Chapter 1 Awakening

This is the story of a modern sailor who was accidentally reborn as a soldier of the Brazilian Expeditionary Force, and finally became the largest plutocratic family in Brazil by virtue of his foresight.

- Description from novelbuddy

My name is Lin Fan. I have crossed the border. I want to cultivate immortality, and my mana is boundless.

Wealthy, powerful and handsome; Gu Jingze is the cream of the crop in the entire country. Every guy wants to be him and every girl wants to be with him. His life is perfect… except that he has one tiny secret that keeps him from getting close to any woman—apparent impotency.

That is, until he wakes up in bed with a total stranger one day. The next thing he knows, he is forced to marry this stranger; a feisty and boisterous woman by the name of Lin Che.

Lin Che is an average girl whose only aim is to become a successful actress. Ostracized by her family and forced to become independent, she cooks up a scheme to attain her goal. But her plan fails and she ends up marrying this cold and seemingly heartless Gu Jingze. Not only that, she must now find her place in high society, where jealous women and devious plots lay abound – all while juggling her new career.

Two strangers under one roof: From the outset, they agree to stay out of each other’s lives, but he somehow always manages to appear during her moments of crisis. Slowly and unwittingly, Lin Che begins to find it difficult to imagine a future without him. Will their relationship grow, or is their marriage destined to remain just a contract?

- Description from Novelupdates

Synopsis one: “The people here aren’t innocent. They’re cunning, they’re greedy, they’re ruthless.” “The nobles here aren’t noble. They’re selfish, they’re arrogant, they’re schemers.” “I was once furious about this. But now, I just pity them. This is a dark world, from the moment they were born, they had no choice but to live life like this. Now, I will give them a choice.” “I want to bring them food so they can be freed from hunger, that will give them morals. I want to bring them peace, so they can have beliefs. I am a transmigrator who has come from a faraway world, I want to bring the fire of civilization to this dark and barbaric place. I know I’m doing the right thing. Eliminating hunger, eradicating plagues, suppressing evil, and ending wars. I will give a second chance to anyone who wants change.” “Then, I’ll kill all of those shameless, brainless idiots.”

Synopsis Two: Kang De transmigrated. He didn’t expect this new world to have sorcerers, dragons, and even gods who were mythical beings that only existed in legends. To protect himself, Kang De had no choice but to train and fortify his body consistently. Soon, he realized that malicious intent didn’t just come from those who possessed extraordinary powers, but also the greedy aristocrats and the king, who was a ruthless dictator. “What? Did I overthrow the nobles? I just wanted to lead the people in my territory to live better lives?” “Why are you guys calling me the king? I don’t want to be a king!” By the time Kang De realized what was happening, his territory had already become the most powerful human kingdom on the continent. The Dragon Emperor called him a brother and powerful sorcerers formed his army. The only targets left now were those gods who saw themselves as superior beings!