The Simple Life of Killing Demons - Chapter 46Book 11:

Fang Xi transmigrated, and not just once but twice!In the cultivation realm, I was timid and cautious; in another world, I unleashed my full potential!Never did I imagine that after millennia, I would become a powerhouse even within the cultivation world!

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.

“Do you want to know how this works?” he whispered.“Yes!” I gasped in response to his tug on my hair. “I want to know.”“Yes, what?” he asked, causing my mind to swirl with the realization of what he was into.“Yes, sir. I can be a good girl.”****For Becca, going to Miami brought up old childhood memories with her best friend, Tally. She needed the break after a rough year attending Yale and a break-up with her boyfriend, Chad. She didn’t expect for her summer of fun to include sleeping with James, the Italian Stallion–Tally’s father.Knowing it’s wrong, she allows James to pull her into a vortex of pleasure that has her breaching the surface of reality and grasping for survival. Can Becca endure this pleasure without Tally finding out?Or will her secrets cause her world to crash around her?Submitting to My Best Friend’s Dad is created by Scarlett Rossi, an eGlobal Creative Publishing signed author.

I was reborn as the villainous daughter, Yumiela Dolknes, in the world of an otome RPG game. Yumiela only had a small role in the original story, but after defeating the Demon King, she will appear as the Hidden Boss with a bonus specs to solo fight the Hero party.

Having a gamer-spirit, I’ve been raising my level since I was a child. By the time I enter the academy where the game stage is, I was level 99.

I wanted the heroine and the capture targets to defeat the Demon King, but they just flirted around and didn’t raise their level. Moreover, they treat me as if I’m the Demon King just because I have dark hair and use dark magic.

It’s a story where I aim for peaceful days.