MTL - Rebirth: Japanese investor - Chapter 812 separated

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.

Dan just wanted to be normal. College, maybe a girlfriend, a life free of drama. Fate had other plans. Now, chosen as a Goddess's champion against his will, Dan is dragged into a hidden world of ancient powers and deadly games. Can a reluctant hero master his divine gifts and survive, or will the weight of godhood crush him before he even begins?.....Thank you for taking the time to view my book. I'm a growing author and so it means a lot to me that you decided to check my book. If you do decide to go ahead to read the book I would like to warn ahead of the typos that I may have missed in a haste to post the work and for that I am sorry. Hope you like the story though. Thank you again for reading..

Seol Woon-hwi, the Blood Heaven’s Righteous Blade, rose to power, becoming second to none under the heavens, reigning just beneath the sky itself.Yet, at the height of absolute power, he finds himself returned to his past—back to his days as the scorned illegitimate child of the Everlasting Snow Palace.

From the outside, Nana’s life seemed simple. She had everything she had ever wanted: a cute but rascally pair of twin brothers, a best friend, and her own restaurant. Nana couldn’t ask for anything more; she was happy and content in her life.