Out of fear of death, Invest Everything into Health - Chapter 80 - 78: Great Oblivion Heart-Burning Technique

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.

Xu Jun finally defeated the BOSS–the Dark Demon King, in this stand-alone, virtual reality game. When he wanted to go out to browse Weibo and express his mood, he suddenly encountered a game BUG and immediately passes over to the game world.

He became the man who finally took down the Great Demon King in this world. Gratifying! The attention of millions of people!

……However, he did not know the development of this world was not the same as the game, the Demon King did not die, rather his soul entered into Xu Jun’s body; this Demon King knows of all the stupid things Xu Jun does everyday…….

- Description from Novelupdates

A man who was locked up to cultivate immortality finally achieved it, becoming immortal and reaching the very peak of existence.But to achieve immortality, he was forced to give up one thing he loved the most, and that was sex. He was a man whore before he was set on the path to cultivating immortality. He could seduce any woman during his time as a mortal.But now that he has achieved immortality and has omnipotent, he wants to go back to his old ways, finding pleasure in tasting different types of women.______________________A/N - This WN is focused on sex, there is a story but it is very slow, MC's focus will be on women since this is a sex story, as for the plot, it really doesn't matter, being omnipotent means no matter what the antagonists do, it is useless, but there will be something to look into when it comes to the plot as I don't want to make it boring to you readers.WARNING.This novel consists of extreme sexual content, for example, hardcore BDSM, sharing, public display, gang bang, corruption, manipulation, and every other kink that I want to put in.If you are uncomfortable with any of the following, do not read.

The male student, Fukai Nagamasa, ignores his studies for college entrance exams in favor of following the path to chuunibyou. As he fainted during night cramming session before the exams, he realized that he was transported to a parallel world as a feudal lord in the Sengoku Era. Not to mention that suddenly, he was marrying the sixth Demon King, Oda Nobunaga’s little sister, the one who was purported to be an unrivaled beauty?