All the Heroines are my Ex-girlfriends - Chapter 292: Meijin-sen

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.

Mutations occurred around the whole world and soon, a demonic apocalypse befell.

In order to defend against demonic beings, humans swiftly entered a globalized digital age. Everyone would be able to choose between a fighting or a supporting job through awakening once they reached the age of 18. These people would get stronger by slaying demonic beings.

Lu Yan had awakened to the weakest job, a Necromancer. However, he had also received a Job Supporting System and was able to reawaken into a hidden job, Lord of the Death.

“Necromancers are so weak that they die in one hit!”

“Man, that dude’s luck is just the worst. He did get a fighting job, but it’s the weakest. What can he do? Summon a few skeletons?”

“Also, aren’t there only like a handful of Necromancers out there? There aren’t a lot of experience or resources for them to inherit. Their future seems bleak.”

“Forget Necromancers! I got the Holy Knight job! Your all-around king is here!”

Not long after that, Lu Yan appeared in a full set of Death Nether Armor while wielding the Death Soul Scythe and leading a 100 thousand-strong death army. With a single swing of his scythe, he split the mythical rank demonic beast in half.

“Necromancers are weak? What does that have to do with me, the Lord of the Death?”

Of the ancient gods only one remained in the world. This god lived alone for thousands of years and no longer had any desires. Legend had it that during the great war between the worlds he used his powers to turn the tide managing to seal the cataclysmic rift bringing order back into the three realms. Time flew by and hundreds of years passed in the blink of an eye.

In this time Shen Li was born into the demon world. Known as the Azure Sky King she was used to living a bright and dazzling life full of successes. Little did she know that her 1000th birthday would bring misfortune to her doorstep – a politically arranged marriage with her name on it. The Azure Sky King would henceforth marry the thirty-third grandson of the Heavenly Emperor, Fu Rongjun. This arranged marriage was meant to unite the Heavenly realm with the Demonic Realm, bringing the two together. Most would consider it good fortune to be related to the Emperor.

Unfortunately Fu Rongjun was infamous throughout the two realms for his Casanova personality. As the King who called the shots in the Demonic Realm, she had the ability to quell uprisings and end wars with a swing of her silver spear – there was absolutely no way she would marry such a flirtatious idiot. She had to escape from this marriage somehow even if it meant death!

In her escape Shen Li, never expected to meet a man that didn’t belong to any of the three realms. This oddball was truly strange!

- Description from Novelupdates

The world spat on him because he betrayed humanity and took the side of darkness.His executioner was his best friend and his lover stood on one side, her eyes hollow and devoid of any sympathy.Every single one desired him to vanish.However, the moment his pitiful life came to an end he found himself getting summoned by a Goddess.Kneeling on the ground and requesting for his help,[For the last time, please wear the mantle of our champion again. This world needs you, Clarsen.]So she said.The world would be pushed under the darkness of death again, and this time there would be several chosen warriors there to save the world.Yet, despite all that, the eldest Goddess was begging for his support.“Fine, I will do it myself.”********Additional tags: Strong to stronger, ruthless MC, kingdom building, limitless mana, possessive characters, regressor, transmigrator, obsessive love.*********A/N:- Give the story a read until it goes through a time skip. I request you to pass the judgment after that.