Academy's Drunk Fighter - Chapter 10: Aptitude Test

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.

“Each time you break a rule; I’ll claim a part of your body as mine” Forced to marry the heir of the largest mafia syndicate to pay for her parent’s debt and her grandmother’s hospital bills. “Live with my son for 30 days, if you don’t fall in love with him, I’ll cancel this contract.” Can Malissa live with the handsome, hot and dominating Hayden for 30 days without falling for his charms? However, there are rules to living with this lusty monster and as Malissa breaks them, she learns of pleasures that she never knew existed. As his touches set her on fire, her heart starts to melt. But does the two have a future together when Hayden is in love with someone else and Malissa cannot get over her ex-boyfriend? READ NOW to find out!

The dead cannot speak.

It means the living can create any story they want.

Inheritance, honor and wealth can be taken away by lies.

However, what happens when a person, who was presumed to be dead, returns alive?