Campione: Strongest Godslayer! - Chapter 272: I Must Be Cursed

220 years ago, in the legendary Dragon Demon War, Hero Azell ended the war by killing the evil Dragon Demon race’s King Atein. He was able to save the population, but as a consequence, he was cursed. While he was dying, the high magician suggested a gamble that might save his life.

“Brother Katakuri, I’m sorry, I don’t want to bear the name of Charlotte for a long time!”

“Ace, your flame is too weak!”

“Akainu, magma is dessert to fire dragons! Why don’t you understand this?”

The man who ate the dragon fruit, the traitor of the Charlotte family, sprinted towards the title of One Piece!

- 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.

“Shameless Xia Ping, not only did you steal my martial arts manual and medicinal pills, you even took my fiancée! We’re not finished!”

“He’s the embarrassment of the Martial Way and a parasite of the human race. A complete scumbag.”

“There’s nothing that he won’t do. Not only would he not help an old person cross the road, he would even steal the lollipop of a three year old.”

“He causes problems everywhere. All of the geniuses of those big families have been beaten up by him before. Now, he’s no longer tolerated by either humans or gods!”

Countless martial arts experts of Yanhuang Star hated Xia Ping down to the very bone. They were just itching to completely crush him into pieces.

As for Xia Ping? Facing the hatred of so many people, he just calmly pulled up the interface of the “Grand Hatred System” and looked at all the wonderful things there. He rubbed his chin, “I’ve already saved up so many Hatred Points. What should I exchange for now? Saint-grade medicinal pills? Or perhaps that Primordial Pill? The peerless martial art skill, Tathagata Palm also seems pretty good too. But then there’s that divine weapon, the Cosmic Cauldron. It really is too difficult to choose!”

- Description from novelupdates