Sect: Starting with Comprehending Thunder Skill - Chapter 837 - 405: Creating a Cultivation Technique (Part 3)

On the 15th of March 2139, the world mourns the passing of Darius Stone, billionaire broker, and philanthropist.

Yet while his family and friends put his body to rest, Darius wakes up to find himself reborn into a younger body in a different world.

A strange voice informs him that his soul has been transported into the magic-filled world of Faust on the behest of a mysterious Goddess called Vena, for the sole purpose of entertaining her through his struggles.

In this world where any dream can be achieved with enough effort, he sets out to become a Supreme, an existence above Mortals and even Gods!

.........

Warning: This novel features a villainous protagonist. If you have enjoyed Warlock of the Magus World, then you should be able to tolerate Darius Stone’s actions and choices throughout the novel in terms of Morality.

Note: This story is slow-paced in order to allow for better world-building and development. If you’re looking for a fast-paced action story, this might not be for you.

An ordinary student accidentally traveled into an other universe and became the king of a small kingdom. He had gotten a “Cheating Code” of life and was able to complete something extraordinary. This is the story about a king that was able to conquer continents and leave behind him an ultimate legend that will be recited between every generation to come.

- Description from novelupdates

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.

Kazuki’s life was painfully average—just another cog in the nine-to-five grind. His only escape? Binge-reading novels and no-lifing video games.Then he woke up inside one of those novels.Armed with unstable morals, unhinged humor, and a penchant for pettiness, Kazuki is determined to survive, thrive, and maybe cause a little chaos along the way.The world has no idea what’s coming.