The Ordinary Me is Worshipped as a Deity by the Extraordinary Them - Chapter 70

When I cleared the final chapter of a game that was a national failure, I became an unnamed side character in it.

A non-standard, unmeasurable, EX rank supporting character.

Odelia Grace, a beautiful and smart woman, a secretary of a big company, had to give up the career she had at a young age for a marriage with the CEO of another company, Vincent Percy.The marriage was filled with love and support for each other for 4 years. However, they did not have a child.Vincent's family became furious, and continued to demand and pressure Odelia. A beautiful marriage turned into a nightmare because of their abuse.“You barren woman! My son is jinxed because of you, he shouldn't have married you in the first place!” snapped her mother-in-law.Until one day, Odelia was kicked out of her own house and went to a hotel for the night. She accidentally met a man who was drunk.Unintentionally, there was a hot night between the two of them.And after that night, Odelia finally realized that she was not barren and that she was carrying a baby.The baby of her ex-husband's enemy, Sean Osbert.

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.

A world where waves of monsters descend every night...A world where only the strong can survive.Axel, a burned-out man from modern Earth, wakes up in a desolate wasteland with nothing but a strange “Harem Settlement System” with him.Given the power to build, command, and grow stronger, he sets off to carve out a safe haven in this broken world. But as his settlement grows, so does the number of beautiful and deadly women drawn under his blanket-ahem!-banner.Witness Axel's journey, rising to to the peak. From a simple, lone survivor to becoming the Wasteland Overlord. With the help of the loyal, dangerous, and irresistible thirsty harem girls!