My Wife and I Became Sages in Another World - Chapter 432: The Cyclops, Trachios

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.

“I thought I was becoming powerful, but it never occurred to me I was inching closer to the abyss.”

***

The Blue Planet: Earth.

Shane was living a beautiful life. He was a topper in his university. Girls flocked around him like birds and bees. His friends treated him as some God.

Everything was good until he was electrocuted.

If you are wondering if his adventures have ended, you're wrong. This was just the beginning.

The next moment he opened his eyes, he became something he never dreamt of—a system. Wait, why wasn't he a host instead?! Wouldn't people enter into amazing fantasy worlds with a cool system after dying?

Why did he have to wake up in a white room?!

He thought everything would be fine even after becoming a system. What could go wrong when he just had to sit behind the desk and handle different hosts?

Boy was he so wrong.

He could use Dark Cosmic Energy! Something only demonic beings could use!

What was going on? He was a human being in his previous life! How the heck could he use demonic power?

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Sneak peak~

“D-Destroy….” Shane's mind buzzed as he thought of something, “Y-You don't mean…. I-I have to destroy an entire world?”

“No,” When Ed said that, Shane's shoulders relaxed as if he had been unburdened, only to freeze again after hearing the next words: “You have to destroy worlds.”

Elara was not a nosy person, but something about her supposedly perfect boss helplessly weeping at night in an empty office triggered her curiosity.Mr. Terrence, her boss, was the ideal image of perfection: powerful, rich, and amiable. There had not been a single flaw in him until the day she saw the crack in his mask.Not only was he not the dominant figure she had assumed, but he was also clingy, sweet, and... wasn’t this the ideal puppy boyfriend?! How was this possible? Her boss was actually a secret softie!Follow Elara as she navigates the chaotic relationship with her 'perfect' boss, filled with nothing but surprises!