From Corpse to Crown: Reborn as a Mortician in Another World - Chapter 6: Breakfast With a Side of Mischief, Part 2

#Expect a big Harem but MC won't mindless collect women on a whim. There's deep mature content. Beware!After getting rejected and humiliated by the very woman he's ever loved—and publicly dumped during lunch break in front of half the school while holding a giant teddy bear, blue roses, and a handwritten love letter titled “My Heart in .mp3”—Jayden Cross thought life couldn't get worse.Then he wakes up with a system talking in his ear.[Ding! Welcome to the Ultimate Copy and Paste System!][Function Unlocked: 10x Copy and Paste!]Now armed with a divine-level Ultimate System Jayden begins rebuilding his life with just copying and pasting everything and gets 10X more!What the world, the system, and the universe had shattered without remorse, only the Ultimate Copy and Paste System could restore. But it did not simply mend—it reimagined. It rewrote his broken existence into a force no storm could contain, only follow.

Chu Jiao had always suffered from the quick changing nature of human relationships since little and had never tasted the feeling of being doted on. She was suddenly informed that her existence was only a few strokes of a pen in a novel. All her suffering was set by the author in order to make the male and female leads succeed.

She wasn’t willing nor could she accept the truth.

For vengeance, she bound herself to the “Supporting Female Carnal Desire System”. In order to survive and go back to the original world, she needed to kick down the female lead and take on the mission of catching the male lead and to clear the conditions, she needed——bo-body fluids?

Originally, she only planned to use her body without the intention of losing her heart but she never imagined that she would over and over again meet people that would carefully place her in the palm of their hand and spoiled her dearly.

They paid her with sincerity so she might as well return it with deep feelings.

Ultimately, she discovered that everything was actually love.

As the stars move and the time turns, you’ll like me no matter what I look like.

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.

Violet skies, a world undergoing massive changes, a deficient moon, interlinking voids…
When the world experienced a cataclysmic event,the majority of living things ceased to exist. Although humanity survived by hiding in the last safe zones, humans had to face mutated dire beasts and colossal source beasts that could break through the space barrier and enter the earth at any second.
Luo Yunyang, a young man who grew up in those calamitous times, obtained an attribute regulator and set out to walk the path of supremacy!

- Description from novelupdates