Reincarnation: My Possessive Beast Husband - Chapter 385 - 386: Wanting to Find Another Man, See How I’ll Deal with You Tonight

In a world filled with Ability users, Demons and Extraterrestrials, Damion Darkblade finds himself born there without any parents to care for him, or an Ability of his own.This rare deficiency causes him to get bullied by his peers always, and his life became a living hell in the academy.The bullying gets so consistent and terrible to the point where he almost loses his life one day.However, with the interference of fate and a stroke of luck, he is recognized by someone with unprecedented power, and Damion's quest for revenge and ultimate glory blooms.[Congratulations Host!][You have received the Dragon God's Legacy][You have unlocked the Ability: Shadow]

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.

In this school fantasy story set in the distant future, creatures contaminated by pollution have overtaken the land, forcing humanity to live in isolated mobile cities called Regios. One such city named Zuellni is a self-contained school in which freshman Layfon Alseif has just enrolled. Layfon reluctantly joins the 17th Military Arts Platoon led by the third-year student Nina Antalk and embarks on a series of adventures.