MTL - Demons Beside You (The Demons Beside Me) - Chapter 3287 tyrannical

Attribute Classification: Overhead/Western Magic/Strong Attack/Sweet

- 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.

“It’s fine, everything can be restarted.”

Gu Huanyue opened her eyes slowly and a smile shown on her face.

In her previous life, she was betrayed by her relatives and missed the right one eventually.

Now that the god gave her another chance, she must regain all her lost and let those people who hurt her pay the price.

This time, her business was developed and expanded so quickly with the help of her super EQ & IQ.

She became the most shining and rich one. All kinds of handsome men were attracted by her beauty and became her loyal followers.

However, she won’t never forget that man. A guy who truly love her so much.

He: “Huanyue, would you like to marry me?”

She: “Why did he not follow my plan? But yes, I do.”

- Description from Novelupdates

Once upon a time, a boy was referred to as a “War Hero.”

In another world called Aletia, the boy who had saved the Lost Kingdom, conquered their neighbouring countries, and led to the rise of a grand empire decided to throw everything away, returning to the modern era at the cost of his memories.

As three years passed, the boy who was happily enjoying his daily life was once again called back to the other world.

However, what awaited him was the Aletia of 1000 years in the future.

As his past glories became a “myth,” the legend of the youth referred to as the, “Twin Black Hero King,” begins.