Lord of Pets - Chapter 1396

Truck-Kun strikes again, but Dan isn't heading to a fantasy world; it's coming to him! Dan will have to figure things out on his own, waking up with a strange new power and his head in a pretty girl's lap!

A crazy voice claiming to be an AI named Orphus tells him the world is about to change, and a battle of good and evil will tear the entire world apart. Dan isn't told he is the only Hero out of the thousands of humans that received special powers!

The Truth of the AI might change everything, but as far as Daniel can see, the AI are a problem that he needs to deal with. This journey is only just beginning, more danger is on the horizon, and Daniel finds out that the problems he faces now are just a warm-up for the actual challenge.

Even if the universe turns against Daniel, he must stand tall and face it all. There isn't anyone else who can do it; he is the only Hero in a universe trying to tear itself apart.

The Hero isn't alone.

Daniel will have the help of his girls, those close to him, and friends he makes along the way. Get ready for a journey that stretches past the limits of your imagination, the known universe!

Xia Yuqing is a shut-in+fujoshi from the 21st century. After an accident, she transmigrates into the body of a young princess forced into a political marriage to another country.

In The Swordsman, I am Yue Buqun! In Legend of the Condor Heroes, I am Ouyang Feng! In Tianlong Babu, I am Ding Chunqiu! …In Datang Shuanglong, I am Shi Zhixuan! …I am me, a big villain boss who walks in the heavens!

 Swordsman, The Legend of the Condor Heroes, The Eight Parts of the Dragon, Little Li Feidao, The Legend of Double Dragons of the Tang Dynasty, Fengyun, Zhuxian, Yangshen, Shading the Sky, Perfect World, Eternal Life…

- 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.