MTL - Cosmic Trading System - Chapter 931 breakthrough!

After the battle, the beautiful senior sister shyly raised her face in front of you and slowly closed her eyes. At this time, you…

Eh? The choice this time was too simple. Of course, it was four.

Thrown into a brutal world of swords and sorcery, his memories stolen by an unseen force, Magnus wanted only one thing: to go home.But every kingdom, devil, and god — along with regressors, possessors, and fellow reincarnators — seeks to carve him apart.Survival demands war. War demands survival.And with a System that hides more than it reveals, Magnus is dragged down a bloodstained path... one battle, one betrayal, one broken world at a time.

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.

The narrative follows a gamer who, after selecting the “Awakened Cinder” class in the game Fractured Dawn, finds himself transported into the game's world. However, this version of the game is devoid of its usual interfaces—no UI, no tutorials, and no second chances. Each death strips away a part of his memories and identity, immersing him deeper into a perilous reality.The protagonist, now known as Riven, must navigate the treacherous Witherlands, confronting formidable foes like the Gravemare and Dreamborn Horrors, while uncovering the mysteries of Emberlight, Grace, and Cindershrines. His journey is one of survival, self-discovery, and challenging the very fabric of this fractured world.