Erotic Adventures in the Omniverse: Vampire Lord got too many wives - Chapter 4: The Revenge

The dawn era after the end of the half century has gradually rebuilt the order, abandoned civilization, and is full of undivided violence and desire.
The noble and powerful pioneers are in charge of the city, and the evil and mad plagues are in the wilderness.
Pure human beings who cannot mutate are the weakest, dominated by the rulers of the pioneers, and are not as good as animals in the wilderness.
A purely humanized young man with a worldly experience has quietly entered the WTO, holding a three-foot long knife and a long-distance desire to boil in the world of purgatory. From the nameless name to the sorrow of the Supreme Court, the name of the black ride is resounding!

- Description from Uukanshu (translated)

As the other person’s stand-in, he humbly falls in love with the president.

Xue Yingshuang was a stand-in, and humbly fell in love with Xing Yun…’s salary pay.

As the other person’s stand-in, Xue Yingshuang wishes he could never be separated from the president for the rest of his life.

He is a stand-in, and he must get off work at one o’clock.

The president’s white moonlight came back, other stand-ins were sad, and depressed. They couldn’t handle the jealousy and finally left with a dead heart.

Xing Yun’s white moonlight came back, and Xue Yingshuang had no waves. He enthusiastically served white moonlight and shone brightly at work.

Xing Yun: Little stand-in, is this your little trick to seduce me?

Xue Yingshuang: Misunderstood.

Xing Yun: Do you want to suffer in silence and finally leave secretly, driving me crazy?

Xue Yingshuang: You think too much, how can I leave? I still have half a year of social security before I can receive unemployment insurance.

Xing Yun: ?

Xue Yingshuang: I also haven’t received the year-end bonus you sent me yet.

Xing Yun: ??

Xue Yingshuang: I didn’t get my paid annual leave either.

Xing Yun: ???

Xue Yingshuang: Wait until I get the money and put it towards a vacation.

- Description from Novelupdates

Just because she glanced at him once more in the crowd, she inexplicably “seduced” Capital's young Mr. Peary. So—“Uncle, I'm stuck at the police station.” Soon, a large group of black-clad, gun-holding people stormed into the police station, nearly blowing it sky-high.“Uncle, someone says she is your wife and told me to take good care of her.” In an instant, the woman disappeared, and a certain man physically demonstrated to her that he only has one wife.In public, he is the cold and ruthless CEO of MC. In private, he is a rogue husband who tries every means to coax her into bed.One day, a certain woman couldn't stand it any longer, clutching her waist and sobbing, “You're sleeping in the study tonight.”The man hooked his lips, “You seduced me first, you proposed to me, you wanted to have a child...”

A Hentai World is a Dangerous Place, Especially if Your Best Friend is a Hentai Protagonist and You Are a Trap.