Love and Debt - Chapter 14: Lesson 2 (Foreplay) and?

A civil engineer reincarnated into a magical land and tragically became a Wood, Earth, and Water Sorcerer.While still questioning where his [Earth Bear Bloodline] originated, the Chosen One next door summoned a 'player'...Watching others lead extraordinary lives, Hill just wanted to hide away.

Light and color, sound and smell;

Food, clothing, housing, mobile phones and computers;

Burn, freeze, rub, explode, thunder, rain, grow, decay;

All material changes and chemical phenomena;

Our bodies, our minds, our world—

All based on electromagnetic interaction!

Whoever can control the electromagnetic force will be the tyrant who dominates the world!

However, electromagnetic force is too profound, so let’s learn how to discharge electricity first…

- Description from novelbuddy

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.