Worm (Parahumans #1) - Chapter 230: Arc 21: Imago - Interlude, Parian

High school student Misumi Makoto is called into a fantasy world by the god Tsukuyomi, in order to be a hero. However, the Goddess ruling the world isn’t as thrilled to have him there, and kicks him to the edge of the world. Tsukuyomi declares that Makoto is free to find his own way after Makoto is abandoned by the other Goddess.

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.

Three Souls lay in one body,

One soul belonging to a man who had reached the peak, the strongest there ever was, the one who had the talent to do so. Yet he suffered because of his talent. His soul shone as bright as a galaxy once, but now is but a sun. His talents made him the envy of all.

And He lost it all.

The Second soul belonged to a man soon to be the richest in the world.

A man who had his face charred, a man who seemingly had every odd placed against him from the very beginning.

He went against the family that abused him and triumphed over them. Yet he was left broken inside, He craved a release, and the first soul brought him that release.

And he became a psychopath that scared the manifestation of evil itself.

And the Third?

The child born from their souls was anything but ordinary. Cursed with a fate no one wanted. Cursed with the fact that the Universe wanted him dead.

He was born from Chaos And Ice and a fraction of light, Yet manipulated Space.

His abilities were so powerful they were harmful to his body.

His talent is as infinite as the boundless cosmos.

His enemies were greater than one could count.

His luck is worse than shit.

And Yet, he continued to fight. Despite whatever was thrown at him, he would brute force through it or outsmart it, befitting the other two above.

He continued to fight, not believing in the bullshit that was destiny.

After three years of marriage, Xia Zimu died on her and Gu Huaixi’s wedding anniversary.

She spent all her ten years of youth chasing him.

However, even though she was hit badly, until he died, he never looked at her.

After living a new life, she resolutely filed for divorce, and finally achieved a positive result with the man who had silently guarded her for ten years.

Seeing her being sweet with others, Gu Huaixi finally went crazy.

“Mumu, I was wrong, turn around and look at me, okay?”

Xia Zimu held Lu Jinghao’s hand, smiling like a flower.

“Sorry, Young Master Gu, I don’t have any place for you in my heart.”

- Description from novelbuddy