MTL - I, a Demon Slayer Girl, is Invincible! - Chapter 234

[The male protagonist quickly wears a romantic text]
A tyrannical star travels through thousands of worlds to save the female supporting stars who have a miserable ending~
Bawangxing is the chief administrator of the Great Star Sea.
But one day, he found that the stars in his domain had become slack since he went down to earth to experience life.
The light dimmed.
Only later did I find out that it was because I was bruised on the way to experience life.
The ending was tragic and the blow was heavy.
In order to revive the prestige of the Great Star Sea, Bawang Xing decided to save his own stars in person!

Current thinking:
In the 1970s, the playful little bully x the little orphan girl
Youth campus wolf dog x arrogant Xiaojiaohua
The young marshal in the Republic of China x soft and cute female poet
The second generation ancestor of the entertainment industry x Xiaohuadan
Another world girl controls the poor boy x color-blind little sister
Apocalyptic Sick Charm Mobile Warehouse x Super-powerful, Charming Beauty
Substitute Bai Yueguang x bad boy
Demon Lord x Fairy Goddess Doctor
Fresh meat idol small milk dog x sexy and glamorous actress
The irritable and upright little prince x step by step for the daughter of a family
A poor boy in a mountain village middle school x a thorny rose who stepped into a wealthy family
Proud petite sweetheart x cool, handsome and tyrannical
Internet celebrity sister x e-sports brother

Content label: Romance of the Times Sweet Text
Search keyword: Protagonist: Huo Xingchao ┃ Supporting role: Little Xingxing ┃ Others: Daxingchenhai

- 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.

The Supernatural era descended, the rules changed, mystery arrived, and the world altered. Countless ruins of civilization emerged, and an abundance of Heavenly Materials and Earthly Treasures lay at everyone’s fingertips. Radical faction, “This is the best of times, entering a new world, excavating relics, mass evolution!” Conservative, “This is the worst of times, with countless monsters outside, once you leave the Safe Zone, extinction awaits humanity!” … Meanwhile, at a remote ruin, Lu Yuan successfully discovered new treasures and sought after the mysterious wealth, desperately trying to contact his fellow Earthlings. “Found a communicator, can it get through?” “Hey, humans—I’m almost becoming a god, and you’re still hiding in the Safe Zone?”

In the ruins after the war, the empire is reborn from the ashes.For supreme glory, it competes for supremacy in the world and aims to dominate the globe.