MTL - The Strongest Dan God - Chapter 575 Ghosts!

After living in a desolate land, where there wasn’t even a single blade of grass and hunger was an everyday reality, Min Sung finally returns to Earth: his home.

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.

Content Warning:This novel contains mature themes, including explicit sexual content, strong language, and adult situations. It is intended for readers 18+ only. Reader discretion is advised.______________________________________________________________________Haruki thought marriage would bring him happiness. He had been in love with Satomi since high school, and after years of struggling together, they finally built a stable life. But stability came with a price.Satomi was always busy. Work became her priority, and Haruki… was left behind. The warmth of their relationship faded, and intimacy became a distant memory. Nights felt colder, the bed emptier—even when she was right beside him.Loneliness gnawed at him.Then everything changed when Satomi’s family invited him to stay at their luxurious home.That was the first time he truly saw her mother.Kyouko.Beautiful. Elegant. Younger-looking than her own daughter. And for the first time in years, Haruki felt something awaken inside him—something dangerous, something forbidden.Living under the same roof, two lonely souls cross paths. And as Haruki struggles with his emotions, one question lingers in his mind:What happens when the one who understands you most… is the one you should never desire?

In the foreign world, the martial artists dominate the world and the sword of the emperor controls the fate of hundreds of millions of lives! Long Yu, the number one killer on Earth, after dying, takes rebirth in this new world in an aristocratic family of martial artists but faces rejection because he is unable to practice martial arts.