Social Outcast - Chapter 15

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.

He was supposed to be just a guardian.But love doesn’t follow rules.After losing his mother, 18-year-old Kai finds himself under the roof of his cold, powerful stepfather, Sebastian Vaughn. What begins as silence turns into lingering glances, late-night tension, and a love Kai can’t run from—even if he tries.But Bast isn’t just any man. He’s possessive, broken, and hiding dangerous secrets… including an ex-lover who wants to destroy everything. As feelings grow, so do the risks.How do you escape a man who says he’s your everything—your father, protector, friend… and lover?

Someone once saw me at the end of the world and respectfully called me the serpent that coils around the world—Jörmungandr.Someone once gazed upon my form at the edge of the Underworld and called me an ancient serpent—Satan.I was also feared by the gods and was called the hundred-headed dragon—Typhon.I have had many names—the serpent of creation, the serpent of sacrifice, the serpent of ceremony, the serpent of the world...But I have wandered through the chaos and arrived at the wilderness. There is only one divine name—the Primordial Ancient Serpent, the origin of everything.

Link, who traveled to the world of pirates, brought Doraemon’s treasure bag.

Just happened to meet Luffy who went out to sea, and has not awakened the true fruit ability of [Renren Fruit Illusory Beast Species Sun King Form], and he is still the rubber fruit Luffy.

That being the case, then I will follow this future One Piece, even more Liberation Warrior Joey Boy, the future Sun King *ka! !

Let’s enjoy the magnificent style of this pirate world together! !

In the process of traveling, all kinds of props also showed a powerful effect from Link’s hands! !

Luffy, actually [rubber fruit] has another name, do you know?

Hawkeye, are you the strongest swordsman in the world? 【Famous Knife·Electric Pill】Learn about it! !

Kaido, do you have the strongest animal army? I have some good flavors of 【Momotaro Rice Balls】, you can try it!

Im, do you want to destroy the world? 【Earth Destruction Bomb】Do you want it for you..

- Description from novelbuddy