The Guidebook for Villainesses - Chapter 38

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.

Everything was over. Everything had stopped.The clanking, the rattling.Even if I seemed lifeless, I still had a life.Crackle! Snap! Crack!I failed to protect Lady Succubus. I failed to defend the dungeon. I was shattered into pieces, completely destroyed.[Succession Complete!]“Succession…? Assimilation…?”Broken and broken again. With each downfall, the world’s true nature begins to reveal itself.

Martin was a succubus who perished at the hands of the Sun God, struck down by a single divine arrow during the epic war between gods and demons. Meanwhile, Martin, a Ph.D. in literature and a seasoned movie enthusiast, lost his life in a car accident in August 2023. By some cosmic twist of fate, the souls of the two Martins converged within the chaotic currents of time and space, merging and eventually settling in the body of an eleven-year-old boy named Martin Myers, living in Los Angeles in 1996.A world without spiritual energy? Fortunately, as a succubus, I don’t need spiritual energy to cultivate; all I need is the essence of desire. Emotions—joy, anger, sorrow, and excitement—are all desires. As long as these emotions are directed at me, they can become fuel for my growth. Alright, let’s see what reliable ways exist in this world to stir people’s emotions en masse. Hmm, becoming a writer—sounds promising; and music, that could work too; but wow, Hollywood movies! They have a global reach; this is perfect! What’s that term again? Right—“Idea Recycler.” I’ll start with writing, but the ultimate goal is to become an international movie star. Acting skills, you say? Don’t worry—I’m a succubus, after all!Disclaimer: I do not own the rights to this novel. All characters, settings, and plot elements belong to the original author and copyright holder. This work is shared purely for entertainment purposes, with no intent to infringe on the original creator’s rights.

Han Sheng Li is the Crown Prince of the Great Han kingdom. Since the age of fourteen, he mostly went to the wars with his father, Han Wenji, the great emperor of the Han Kingdom. He's the most favored child of his father but, is the cruelest and ruthless among all of his seven half brothers.