Masteria Online: Shattering the Dark God's Grand Scheme - Chapter 93 - Big Woman

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.

How long I’d been here, I couldn’t quite recall. From this sorry situation, I as always raised my eyes to the sky; a sky in which the great, massive sun was clad in levity. Sunlight poured gently upon all. What a blessing it would have been for the world if only the skies could remain clear. For tomorrow too, and for all days to come, I was to continue to pray for calm. To endure for those who cried, with desperation I remained in prayer.

And then, one freezing, forlorn, soulless, stagnant, drizzly day we died. Or so I thought…

Getting the [Boosted Gear] is expected for Issei. What if he gained it a month early and another one as well? Let the Games Begin... IsseiXHarem (if it wasn't, it wouldn't be DXD). Now has a TVTropes page! Getting the [Boosted Gear] is expected for Issei. What if he gained it a month early and another one as well? Let the Games Begin... IsseiXHarem (if it wasn't, it wouldn't be DXD). Now has a TVTropes page!

Jiang Yang traveled to a parallel world and became a garbage undergraduate graduate.

He got married as soon as he graduated, and reached the pinnacle of his life. Then he achieved nothing, his family was poor, and he was unemployed at the beginning. He only had one skill. Just when he was in despair, his wife raised his chin, “I will support you.”

She took off her glasses, and the big devil who once made the singing world tremble came back.

after many years…

Jiang Yang watched Huayu being turned upside down under the ravages of his wife, he had no choice but to spread his hands, blaming only his company for dismissing him.

As for him, he is the only king of entertainment who can subdue the devil.

This book is also known as: [I am a man with BGM] [My wife is a big devil]

【Dog food, daily life, entertainment article】

- Description from novelbuddy