Got Dropped into a Ghost Story, Still Gotta Work - Chapter 55

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.

A man who had emerged from the world’s most secure prison—God of Death Island, known as a super-powered being called the God of Death, had grown tired of the bloody storms abroad and now, like a hidden dragon, he had returned! But due to an accident, he became the contract husband of a beautiful CEO! From then on, he ruled the city, crushed the petty and wicked, and embarked on the tyrannical journey of an urban legend!

In Academy City, magic and science coexist in an unwavering power struggle. Toma Kamijo, an academically-challenged student in Academy City, wields the power of the Imagine Breaker in his right hand, which allows him to completely negate all supernatural powers – as well as his own luck. When he happens upon a mysterious nun named Index, whose mind has been implanted with the Index Librorum Prohibitorum – 103,000 ancient texts banned by the Church – Toma’s luck is about to be pushed to its limits when he finds himself in the middle of a war he never expected!

Facing bankruptcy, a beekeeper crosses over into a magical fantasy world, gaining the ability to control bee swarms. Leveraging magic, he cultivates diverse mutant bee species: efficient honey-collecting bees, formidable combat bees, and entirely new bee species with extraordinary abilities.He explores this fantastical world, bringing back various nectar-bearing flora for cultivation, creating magical honey imbued with enchanting effects, and distributing it to all corners of both worlds. While he becomes renowned as the Honey King of his original world and an elite beekeeper, his fame also spreads in the magical world, where he’s known as the Bee Whisperer of the Black Forest.The latest edition of the “Black Forest Adventure Guide” specifically warns: “Never attempt to provoke him, or his bee swarms will not spare you! Don’t ask me how I know!”