The World's most Overpowered Side-Character - Chapter 108: Primordial Chaos Demon God.

【You will encounter gongs in different worlds with different temperaments and different emotions. They are fine and loyal dogs. 】

【You are superior in appearance, they will love you at first sight, willing to sacrifice all, but soon they will get bored, betray, cheat】

【You are vengeful, and want to take revenge on that slag gong】

“Can.” Qin Mu then put forward his own requirements. “To fall in love, they first must have a good waist and long legs. The abdominal muscles must have eight blocks to satisfy me. As for the face, I am not superficial, as long as it’s of the highest quality I don’t mind.”

The thieves are caught, and those slag gongs take for granted that because Qin Mu loves them, he will choose to forgive them.【Smile】

However Qin Mu, who is cold to the bones, only smokes a cigarette and expresses his deep love to a new lover. “Beauty, I want to be with you.”

The slag gongs, “Please come back to me, I will never leave you… If you don’t agree and continue to hook up with other people, then I can only break your legs and lock you up. From now on, only I can see you.”

- Description from Novelupdates

In the year 298 from the era of the gods, elementary school girls Sumi Washio, Sonoko Nogi, and Gin Minowa are tasked with an important mission. They are to become heroes and fight Vertex, a mysterious enemy that is attacking Shinju-sama, the god tree that protects Shikoku, the only area in the world that is still habitable. What they don’t know, is that this fight will cost them more than they could have ever imagined.

After spending half a year in the province, Cheng Yang took a luxurious cruise for seven days.
Accidentally hooked up with a CEO on the way.

Later, Cheng Yang found out that he was pregnant.
Just as Cheng Yang was preparing to secretly give birth to the baby, it was a coincidence that he fell asleep in the big president’s bed.

It’s impossible to run with the ball, his man is handsome and rich.
Must cling tightly and can’t be torn down.

- Description from Novelupdates

A scientific genius named Thomas Harrier was transmigrated to an imperial prince body after a car accident that took his life. He found out that he is in a world similar to our own with a timeline akin to early twentieth century. The body that he is occupying was the imperial prince of a failing empire who suddenly rose to power after a successful assassination attempt of his father. Unaware that the attack is just the beginning of what is to come. He faces many challenges throughout. Will Thomas Harrier be able to live his second life in peace while running an empire and getting it back to its former glory? Or will he succumb into a conspiracy lurking within the country's borders?

Expect some:

Cold war era techs.

Super battleship with advanced electronics, propulsion, and fire control systems?
Helicopters?
Missiles?
Modern medicines and equipment?
AC-130?
A nuke?
Challenger or Abrams or Leopard?
F-4 Phantom or MIG-21?
Colored TV's.

Everything!!!

PS. Cover not mine, I just found it on google.