Rebirth Immortal - Chapter 46: Shadows in the Black Market

Emperor Ian Veroshion, the first noble mage, was betrayed and executed. Cursed to never be reborn, he awakens a century later as the illegitimate son of a disgraced ducal line, destined to be a hostage in a barbaric land. Stripped of his magic and his throne, he must navigate a world vastly different from the one he ruled, facing political machinations and a resurgent monster threat. But the embers of his past life still burn, and Ian will not surrender his legacy. He will reclaim his name, his magic, and perhaps, even his empire.

fter crossing over, he was forced to marry Orion instead. Li Xiaoran said that it was very sudden.

Who knew that the rumored brutal and beating Orion was actually a warmhearted man.

It’s not impossible to get married, but you have to get your relatives out of the wolf’s den of Lao Li’s house first!

Luo Cheng: Don’t worry, ma’am, everything is on me!

- Description from novelbuddy

Transported to a female-dominated world and endowed with a submissive “shou” physique, he faces the threat of being hacked to death with a cleaver due to his “green tea” behavior.“I must change my fate!” Su Yan raised his hand and swore.However…“Little Junior Brother, I’ve noticed you’ve been getting prettier lately. Let your Senior Sister study you a bit.”“Why are you distancing yourself from me? Is it because you’ve taken a liking to some other woman?”“I’m going to lock you up at home, so you’ll belong to me forever.”

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.