If You Could Hear My Heart - Chapter 847 - : The President’s Only Scandalous Girlfriend from Back in the Day

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.

[Trait: Protagonist's Desire][Acquire one trait possessed by the protagonist you reincarnate into.]A killer physique, a hypnosis app, becoming a shota...The protagonist has gained the ability to reincarnate into characters from adult games and make their traits his own. NO NTRRomance | Fantasy | Harem | Multiverse | SMUT | R18 | Reincarnation | NTL

When the heavy curtains of night descended, darkness fell upon the earth. What will later be known as the dawn of the “Dark” era, humanity once again unfolded a new path of evolution. While retaining the memories of surviving ten years in the apocalyptic world, Ye Chen awakens back on the very day the disaster struck; all he can do is protect the people dear to him, and then….

With the might of an ant, set foot upon the pinnacle of this world!

The people lost in the thralls of everyday life, aimlessly struggling for survival in this world, move forward; there will surely be a path only you can open….

- Description from Novelupdates

The horror game anchor Xiao Tangqiu crossed into a horror game.

He hadn’t yet cleared the instance when he met a man who was exactly like his childhood friend who had been dead for many years.

Where did this cold and powerful mysterious man come from? Why did the brutal killing games happen so frequently? Why did his teammates go crazy in the middle of the night? Who was the ultimate mastermind behind all of this… Was it a distortion of human nature or moral decay?

Please pay attention to the ‘Horror Game, Live Broadcast’ and follow the live broadcast of Anchor Xiao Tanqiu’s horror game.

- Description from novelupdates