My Dear Miss Medical Examiner - Chapter 109.3

“Great Mr. Chen Yu, having been successfully elected as the leader of the human race last night, do you have anything you’d like to say to the whole world?” Chen Yu got out of bed, bewildered and still undressed, “I don’t know, I just woke up...”

Five years have passed since the Elves invaded Earth.

The poor and criminals of the Republic of Ascaria are forced to join the ranks of the soldiers on the front lines while the rich and high-ranking government officials hide behind walls.

Erend Drake is a young man who must go out and fight so his family can live in a squalid shelter within the walls.

One night in the battle Erend had to die because he was killed by the Elves.

But suddenly he wakes up the next day with a mysterious power.

[Congratulations, you have been chosen to be the holder of Systema.]

[Please choose the available skills]

[ Dragon Armor ]

[ Dragon Claw ]

[ Dragon Eyes ]

[ Dragon Wings ]

[ Fire Breathing ]

Erend did not expect that he would become a Dragonborn. The strongest race feared by the Elves and the humans.

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 mortal body, metamorphosis, longevity, immortality, and eternal life. These five realms, step by step, reveal themselves in front of you. As a normal person, how can one try step by step to reach and open the door to eternal life?

Between the heaven and the earth lies the mortal body, the mysteries of metamorphosis, freedom of longevity, the power of immortality, and the hope of eternal life. A story filled with endless new magic, a new world of immortal styles, people, demons, gods, fairies, magic, kings and emperors. A world of love and hatred, revenge, and mystical battle, all in “Eternal Life.”

- Description from Novelupdates