Leveling up the World - Chapter 44: Merchant Tombstone

“Noob. Weakest. Hardstuck .Tryhard. Trash. Pick a word, it fits me.”In a post-apocalyptic world overrun by monstrous creatures known as Eaters, some humans give up their humanity to gain a powerful weapon fused into their right hand. These people become Eater Blades, warriors who must hunt and feed their weapons with Eaters to rise through the ranks and prove their worth.In a world where rank means everything, Johnquis remains unranked.Why? Because his weapon is a chain. Everyone laughs, calling him “Leash Boy.” They mock him, never realizing the truth. That his chains aren’t made to cut… they’re made to control.This is a world where zombie-like monsters evolve, and a strange game-like system controls everything.Grind, rank up and evolve.Watch how Johnquis changes the game and tames the apocalypse.

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 married the daughter of the Lancaster family purely for revenge. He expected her to be obedient and submissive, not to resist or show emotions—a perfect pawn in his plan for vengeance.However, when his gaze locked onto the third daughter of the Lancaster family, the one who barged into the living room was her—disheveled and stained with blood. She seemed ordinary, but beneath the surface, she hid an unknown sharpness.“Do you love me?” he asked coldly.“You're crazy!” she rolled her eyes in disdain.In that moment, he smiled with satisfaction, believing he had everything under control.But she fought back. Marrying him was merely one step in her own plan.Four years later, with the Lancaster family completely destroyed, she threw the divorce papers in his face, smiling like the final victor:“Albert Wilson, have you finished using me? Thank you for making me think I once loved you. Now, never see me again, even in death.”Just as she turned to leave in triumph, she accidentally walked into a gang's arms deal, and an explosion forever separated her from him.It was only when he found the two-month pregnancy test result among her belongings that he realized he had lost the only salvation of his life.

Protagonist travels between different anime worlds to right wrongs and uncover his reason for being along the way.

- Description from Novelupdates