The Attack of the Wastrel - Chapter 420 – They Were Finally Out!

Chi Zhao binds with the slag shou system, and if he succeeds in his missions, he will be rewarded.

But who said life is easy!

A rich old man who was slagged by him: “I know you love me. Your past pains, I’ve already investigated them.”

The star admiral who had been slagged by him: “Don’t be reluctant anymore! I’ve always known that you didn’t betray me.”

The entertainment mogul who was slagged by him: “Don’t make any noise. Honey, will you come home with me?”

The dark sentinel who was slagged by him: “Now, do you still want to say that it is not my child?”

The prince regent who was slagged by him said, “The mountains and rivers are yours, but you are mine.”

…

Chi Zhao burst into tears: “Boss, believe me just this once. Let me get the reward, okay?”

Thinking that the acting is very good, in fact, every day he’s spreading meng.

- Description from Novelupdates

The Mafia Empire tells the story of Julian Kesma, the third son of a poor farmer’s family in a decaying empire. After gaining memories from his past life as a shrewd businessman from Earth, Julian sets out on a dangerous journey to climb from the bottom of society to its very top. Battling poverty and social discrimination, he forms a gang from his fellow oppressed Guarths and dives into the criminal underworld, quickly becoming entangled in deadly political conspiracies.Through cunning, ruthless tactics, and a cold, calculating nature, Julian transforms from a struggling nobody into a fearsome mafia lord. As he gains influence in both the underworld and legitimate businesses, he manipulates his way into the political arena, aiming to dominate every aspect of society. His ambition extends far beyond crime, as he strives to reshape the empire itself.

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.

Kazura was selected as the winner on a lottery that he bought on a whim and received ¥4,000,000,000 (4 billion yen).