MTL - I, The New Hokage of Konoha - Chapter 347 Ju Konoha, it's not easy

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.

Han Tae-Sung, thought he was talented in video games and dreamt of turning his life around through BNW, but he would soon realize that life was not as easy as he thought it was.

He’s betrayed by his comrades, hunted down by his enemies, and even chased by debts in real life. He lost everything in the blink of an eye and was thrown down a pit of despair.

What stood in his way? Talent, wealth, connections, and luck.

There was simply no way he could win against those born differently no matter how much he struggled.

However, armed with a second chance and a hidden class, Tae-Sung starts from scratch and embarks on a journey to redeem himself and exact revenge against his enemies.

……………………………………………………………

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Transmigrated to become a disciple of the demon sect, relying on the technique modifier to become a giant of the demon path.

[Detected the technique “Blood Nerve”, relying on devouring blood to cultivate]

[Side effect: easily affected by the spirit contained in the blood, becoming bloodthirsty, murderous, insane, and even brain dead]

[Please wait, system modification is in progress…]

[Ding! Modification completed and side effects canceled]

It’s a affair between a loyal dog servant and his master.

- Description from Novelupdates