At the start, I tricked the school beauty, and ended up with twins? - Chapter 3 - 2 Confession! School Beauty, May I Hold You?_2

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.

After transmigrating into a SF (Science Fiction) novel and enduring cruel hardships, I ascended to the throne as the Emperor of the Galactic Empire.[Welcome to the Integrated Dimensional Community.]As the community’s Lone SF Transmigrator, I unleashed the poison of new cultures on the uncivilized primitives of the Otherworlds.-Let there be light. To judge the horde of evil, the Apostle of the Goddess sent down a Graviton Surge. Thus, in that place was light along with a massive explosion…-The Grand Duke of the North has shown great interest in your Heattech…-I, as a Namgung, am thankful for the grace akin to the vast sea provided by the Great Hero. By virtue of the Vibroblade bestowed by the Great Hero, the nefarious Demonic Cult has…It seems like these Otherworlders can’t get their sh*t together.

The world is filled with talented people. But, there are many who never possessed that talent. They work hard, but hard work often doesn't give them a good result.

Fu Chen was one of those. He was a mortal, without any talent for cultivation. But, with the help of an strange encounter, he inherited the Strongest Offline Cultivation.

Join Fu Chen's journey where he uses his system, not to be strong but to gain talent. Because he knows the power doesn't come without the sacrifice, so he isn't willing to use his system to gain strength.

Rather, it opened a path for him. A path where he encounters opportunities which he couldn't even dream off before.

Traveling in this path, he finally gets a chance to accomplish his dream but accomplishing his dream was just a part of a bigger goal. It was the mystery behind his system.

Where did it come from? Was he alone? Are there other people with such systems? All of these questions began to pop up in his head and he knows he must find the answers.

Throughout the Ming Kingdom, Jun Hua was famous for being a useless girl without any talent worthy of praise. Everyone mocked her, belittling her for latching onto her brilliant brother Jun Min, the young and peerless general admired as the most talented prodigy for his talent and his ability to change the fate of the declining Jun Family.

Never in their wildest dreams would they have suspected that Jun Hua is the young general who is leading the army on the frontline, Jun Min!

“She has no talent as a girl, but has the brilliance of a great general!”

Her journey towards revenge is something she has to do on her own. And yet, on that path she will gain allies, friends, and possibly even...... a romance?

This is Jun Hua's story, a story that shall be carved into history as the legend of “the flower who blooms from the battlefields”.