Extreme Knight - Chapter 536: fierce

In a world where dungeon runners rise to fame by mastering their classes and conquering impossible threats, Alexander was never meant to be part of it. No class. No path. Just a quiet life.When a mysterious portal drags him into a hidden realm known as his Inner Path, Alexander unlocks a class no one has seen before: Beholder. There’s no fanfare. No guidance. Only eyes that see too much, and power that threatens to unravel his mind with every use.Now, trapped in an abyssal dungeon that reshapes itself around eldritch laws, Alexander must survive alone.But with each victory, his vision sharpens. His spells twist reality. And the deeper he goes, the more the world outside should start to worry.Because when he returns-They won’t be able to look away.

How long I’d been here, I couldn’t quite recall. From this sorry situation, I as always raised my eyes to the sky; a sky in which the great, massive sun was clad in levity. Sunlight poured gently upon all. What a blessing it would have been for the world if only the skies could remain clear. For tomorrow too, and for all days to come, I was to continue to pray for calm. To endure for those who cried, with desperation I remained in prayer.

And then, one freezing, forlorn, soulless, stagnant, drizzly day we died. Or so I thought…

My talent can be said above average but for my family I am useless. Six years after the incident that I caused I accidentally created a system.Now I wonder if I will fail again....with my new power I will make sure my cute little older brother, sister and especially my Father will pay the price of creating a monster.... Me

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.