DxD: Matsuda? - Chapter 89: Dogeza House?

Ken was about to take his own life, after he had experienced a very tragic emotion. However, he was stopped by a mysterious cyan screen before his eyes.“What is this?”The Cyan screen displayed a message. It called itself the Guarantee System, and told him that it would guarantee whatever mission he desires. And through these missions he was to earn a reward, and these rewards were to be massive if the mission he takes, is relating to a… female.Then the question followed…[What will be your first mission?]At that moment, Ken knew… just the right thing he wanted. With a smirk on his face he said.“I WILL GET ALL THE LADIES I WANT!”Hehe'Disclaimer: This story is a work of fiction. All characters, events, and organizations are imaginary and any resemblance to real persons or events is purely coincidental. The narrative is intended for entertainment purposes only and does not reflect real-life occurrences or perspectives.Enjoy!

Bai Aoxue, the best mercenary in the 21st century, is accidentally sent back to the Chengxi Dynasty in Great Continent due to an explosion in her mission, and trapped in the first daughter of Prime Minister. After her rebirth, she is set up by her father to marry the 5th prince Jun Yeyan who wears a mask all day long.
In the face of bloodthirsty enemies, discord between brothers, collusion among courtiers and invasion of enemy state, can Bai and Jun resolve the crises? What will happen to their political marriage? How will the fierce battle for the throne end?
With many twists and turns, the book brings you to experience palace revolution, love and hatred thousands of years ago.

- Description from Novelupdates

The little handsome son-in-law passed through a world as waste material and the husband of a wealthy family. But because of his lacking aptitude, the wealthy family had driven him out. So he worked hard and found a more powerful family’s thighs to hold onto. Soon enough, he became the strongest son-in-law and husband in history.

In this world, it was impossible to practice martial arts. It was futile so he might as well take advantage of his wife’s thighs and maintain a comfortable and leisure lifestyle.

He’ll train his wife to become the strongest and best person in the world.

“Whoever dares to provoke me, let my wife kill you!”

- Description from Novelupdates

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Copy:

Undercover police officer: We are two-on-two, so we can’t be careless.

FBI undercover: I’m in a one-on-three, and I have to be vigilant.

Zhenjiu: My teammates are very reliable, I don’t need to worry at all, and I give comrade hr Jinjiu a five-star praise.

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The semi-invincible text, some of the protagonists refer to Dazai Osamu, the stray dog.

Without a heroine, the only thing that can make the hero’s heart beat faster is the bill.

- Description from novelbuddy