MTL - Rebirth 1999: Opening the Age of Black Technology - Chapter 8 These times are so hard

As the owner of an ordinary bookstore, Ling PingAn’s biggest wish was to muddle through life and do absolutely nothing.

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.

Lyra is a 21st-century girl from the modern world who accidentally transmigrated into the beast world while swimming. what happens when a gorgeous young girl with golden blonde hair and ocean blue eyes with ivory white skin doll falls into a world where the female population is drastically low. But as she stays in the world, she discovers many secrets about herself which she never imagined. Join her journey in discovering love, heartache, and the real truth of her life.This is my first story please support me and join me on my journey through this story.The cover photo is not mineContains mature content with many r#18 scenes audience below 16 restrain from reading it.

Freya, head of the Tokyo yakuza, is suddenly betrayed and murdered by one of her subordinates.

“Well, I thought I would end up in hell and now a Goddess is interested in me to fight against humans from another world reincarnated as a Wolf Demon? Nani ?????”

[Empress System Initialization Successful 100%]

Follow Freya the ruthless Empress of Ice as she draws her story in an enigmatic new world of magic and fantastic creatures. She'll discover that life is no easier than on Earth, if not harder and crueler. In this world where humans act as tyrants over all other races, hunted, denigrated, killed, tortured, even if the law of the strongest humans reigns, she'll rise to the top.

“Humans ? Exterminate them to the last one ! My family, companions and Empire ? I will give everything to protect them !”

From a cruel monster to a loving woman, watch Freya found her Empire to change the whole world and tint it with her color. Accompanied by her new family, companions and subordinates be the first to witness the ruthless Empress Freya writing her legend.