I've Become a Genius Actor - Chapter 43:

Freshman student Yang Dingtian possesses the Nine Yang Body, found only 1 in million. His Yang Fire is incomparably vigorous and thus, he cannot be near a female’s charms for his entire life. On the night of his 19th birthday, he decided to bid farewell to his virgin life. After stealing and tasting the forbidden fruit, he spontaneously combusted as the result!

In death he crossed over to another world; a world that held respect for Martial Power. His, originally, catastrophic Nine Yang Body was the Nine Yang Body that couldn’t be seen in a millennium! He was saved by a mysterious old man when he was at his last moments and the old man received him for a disciple, then betrothed his daughter to him. Thus, in this odd way, Yang Dingtian became the successor of the largest clan under Heaven, and became the number-one-beauty-under-heaven’s fiance.

- Description from Novelupdates

Getting caught up in another world, especially the same kind as your favorite Novel, sounds all fun and sweet...

… Until it's not!

As an avid Weeb, this wasn't how Samuel expected his Transmigrated life to turn out.

Completely removed from the comfortable life he once knew, this ‘modern guy' finds himself in a fantasy world that is in polar contrast with what he had imagined.

His mission?

Kill the Demon God and bring the world to peace!

It sounds so easy, right?

Too bad his new life isn't as grand as he expected.

'Now that it has come to this, there's only one thing left to do...'

Gather as many allies as he can on his grand quest.

“I'm not Overpowered, but... no one has to know that, right?”

Watch as Samuel Peterson, a seemingly ordinary guy, overcomes his tribulation in a place where everyone relies on him and actually believes he is their only hope.

An epic Kingdombuilding Misunderstanding Story awaits you!

In this world, there is the beautiful mutual and telepathy love.

“I’ve been pursuing you for so long, what do you think?’

Xu Xu could feel her heart pounding in her chest; however what he said wasn’t logical.

“You’re pursuing me?”

Ji Bai raised his black eyes looking at her quietly.

“Every morning I exercised with you, personally taught you how to shoot, prompted the police team to call you sister in law… If this isn’t pursuing, then what is it?”

She took a deep breath stabilizing her heartbeat.

“You don’t need to pursue me anymore.”

Ji Bai totally did not expect her to say that. His heart sank, coldly said: “What do you mean?”

Xu Xu looked into his eyes: “I also like you so you don’t need to pursue.”

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.