The Twelve Apocalypses: A Damned Soul's Path to the Abyss - Chapter 12: The Sword

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.

Brian had just been confessed to during his sky-diving adventure which turned tragic.Now dead and presented with the choice of a world to reincarnate into he chooses the Naruto world with Kaguya's abilities.═══════════════════════│ DISCLAIMER │This is a work of fan fiction based on the *Naruto* series. All characters, locations, and settings from *Naruto* are the property of Masashi Kishimoto, Shueisha, Viz Media, and their associated rights holders. Additionally, this story contains references to characters and elements from other anime and manga series. I do not claim ownership of any copyrighted material used in this fan fiction.The plot and any original characters are my own creation. This work is purely for entertainment purposes and is not intended to infringe on any copyrights or trademarks. Please support the official releases and the original creators by purchasing or legally accessing their works.

A lonely soul, which was placed under the care of the Lord Protector’s Manor, ended up having her lover stolen by the family’s eldest daughter and dying tragically the day before her wedding.

Mu Jingzhe transmigrates into a book filled with sweet, doting love to become the useless supporting character who serves as a foil to the female lead. She also becomes the stepmom of five kids to her recently deceased husband.