Ferocious Boss: Hubby, Let’s Get Married - Chapter 4187

A genius inventor dies and awakens in his younger self's body... but not quite. This isn't his original younger self-it's an alternate version from a reality where the supernatural is real.To make matters even more chaotic, he discovers that someone has decided he is the successor to Solomon. Now, he possesses the power to enslave devils. Armed with his intellect and newfound abilities, it's time to spark a worldwide revolution... starting from his garage!---Tags: Neutral-Evil MC (enslavement, selfish MC), Harem (of course), Inventions, Technological Progress, Sacred Gear Creation, AU DxD Universe (part of Dragon's Omniverse).This fanfic is a STEAMROLLER, with the main focus on the MC's development and his technological innovations, as well as their impact on the world. If you're looking for drama, suspense, or epic battles with no real purpose, this isn't the story for you.

The cousin isn’t called Biao Ge. He has his own name. His name is Cheng Jinyu. From the phrase—– Wo Jin Huai Yu (to hold and cherish a beautiful jade; a person with good moral values), it’s the name his father gave him.

But Chen Yuze calls him Biao Ge, so Biao Ge became his name.

Biao Ge has a sworn enemy, his name is Gu Bokai. Biao Ge doesn’t know how he provoked this person. He detested himself very much. Like being disgusted with sh*t in a garbage can.

However one day Biao Ge was told to marry Gu Bokai. As for the reason, an extreme pain in the ass, because Biao Ge’s life is hard!

Gu Bo Kai has married three times and now has three dead wives…

Gu Bo Kai: No, absolutely not!

Mother Gu: First cry, second stir up trouble, third hang oneself (throwing a temper tantrum). Continue to get married, or I die and let you see.

Gu Bo Kai: Why?

Mother Gu: He is tough, can avoid being killed by you and can also have children.

(Shou and Gong have no kinship. Biao Ge is what others call this person. It’s like a name)

- Description from Novelupdates

Humanity was living peacefully on Earth for millions and millions of years until the day unknown monsters from beyond space invaded them.

When humans were about to disappear, some people with abilities came out to the light and shared their knowledge and powers with the world, and together, they managed to push back the invaders during a terrible war that had lasted for years.

This war had created many orphans, and among them, Kye had lost everything, even his parents. And the only thing he received from their death was a pale-looking necklace.

However, once the necklace finally activated, a system was given to him, and his life changed completely.

The system gave him quests to do, and Kye complied. He was getting stronger every time he achieved them, until the day it gave him a weird quest.

[You have one day to kill the one who had sinned. If you do not kill, you will die.]

Xiao Ze, who was dedicated to the people and vowed to become a generation of Ming Jun, accidentally fell on a little lady.
The little lady was born beautiful and lovable.
So Xiao Ze accepted his life and got the name of fear.

ps:
①The male protagonist has no concubine, and he is dedicated to serving the country.

- Description from novelbuddy