BTTH: DISCIPLE CASHBACK SYSTEM - Chapter 447: Eavesdropping in the Alley! A Mysterious Powerhouse!

Ian Night’s life was a joke—until it wasn’t.Betrayed, discarded, and left with nothing, he welcomed death when it came. But fate had other plans.Reborn in chains, Ian awakens as a slave in a world where power is dictated by bloodlines and magic.While others wield fire and lightning, he is given dominion over something far more absolute: Death.With every slain foe, every stolen soul, and every corpse bound to his will, Ian will carve his way from servitude to supremacy.He will rise from the dirt. He will shatter his chains. And those who once cast him aside will learn what it means to fear the dead.[Ability Unlocked: Soulbind – Bind the fallen to your will.][Absorb strength of fallen soul?][New Trait Acquired: Gravewalker – The dead whisper, and you listen.]Kingdoms will tremble.The weak will kneel.And Ian Night will never be a failure again.Or, like most in this cursed world, he’ll die trying.

Born with a seed of immortality, he rose from the Han tribe at the end of the century, and embarked on the road of immortality, step by step, until he reached the other side of immortality.

Efforts will pay off. For cultivators, what better golden finger is there?

- Description from novelbuddy

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.

「Shimizu-san, you dyed your hair black.」「Ah, yes.」「Why did you dye it all of a sudden?」「Because…yesterday…」Shimizu-san, who sat next to me and had dyed her hair from blonde to black gradually lowered her voice, slightly blushed, and laid her face down on the desk.