MTL - I Was a Group Pet In 80 - Chapter 1114 He is sacrificing the small self to complete the big self

GBT - BL OMEGAVERSE 18+The Wyne family is a famous wealthy family in Zondalian, a country famous for its progress in the eyes of the world. And their main heir is a handsome man named Daren Harry Wyne.Unfortunately, Daren was born as an Omega who always made trouble until his parents were fed up and annoyed with their own son's behavior.Until one day, a bodyguard is hired to watch over Daren from all sorts of dangers. Both from outside and from Daren himself.“Bodyguard, again? You've got to be kidding me. I can protect myself! I don't need an Alpha to protect me!”However, Daren realized that there was something different about his new bodyguard. There was something he was hiding.Something he couldn't reveal.“Who are you, Mr. Bodyguard?”Kill Me Protect Me, Mr. Bodyguard.

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.

Lacking a pocket dimension, lacking a power, lacking a thigh to hug onto and the three life advantages (money, power, and looks), he had been cautiously living in the apocalypse for ten years, getting closer to falling inside the zombie’s mouths. But unexpectedly, he had the terrible luck, to be caught in a fight between two gangs and die, it really left people feeling disappointed.

The eve of her sister's wedding, an accident happened, the responsibility her sister abandoned, should she bear it? She's not a professional scapegoat!“Um, it's my sister who wronged you, it has nothing to do with me.”“So, is there a problem with making you, her younger sister, repay the debt?”Faced with the man's dominance, May Morgan was on the verge of tears without shedding any.“But, we haven't had a chance to get to know each other yet!”“Then let's start getting to know each other now!”