MTL - Martial Arts: Just Finished the Patrol, the Beginning is Ruthless - Chapter 74

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.

The Demon King dies and the entire Demon Realm perishes in the prologue of “The Demon King is Dead,” and I have become the Demon Prince of that novel.

… Somebody save me.

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The strangest fate, the most exciting mind games, the cruelest survival battle, the craziest fantasy, the most bizarre truth… The first is here to battle for another ten years!

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