Sword Pilgrim - Chapter 109

Kazuki’s life was painfully average—just another cog in the nine-to-five grind. His only escape? Binge-reading novels and no-lifing video games.Then he woke up inside one of those novels.Armed with unstable morals, unhinged humor, and a penchant for pettiness, Kazuki is determined to survive, thrive, and maybe cause a little chaos along the way.The world has no idea what’s coming.

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.

“So basically... I'm a Necromancer from my game... in this world?”“...And I'm useless?”“Yeah, right.”---Alexander never expected his dull life to change—until a single message appeared. What seemed like a prank or an ARG from his game became something far more real.He transmigrates.Now, in the body of Asher Morgan, a nineteen-year-old with a lonely past. His plan? Stay under the radar, play it safe, and live like he always had—a gamer, a slacker.But fate had other plans.At Velcrest Academy’s Inauguration Ceremony, where students awaken their powers, Asher receives the worst possible class.“Outcast. Worthless.”That becomes his new name—until fate decides to change plans.The system glitches.—[ERROR… ERROR… Recalculating Awakening Process…][Hidden Ability Detected—Reawakening Process Initiated][SSS-Ranked Ability Unlocked: Sovereign of the Dead][Secret Evolution Triggered—Job Upgraded: Lord of Draconic Souls]—At first, he is frustrated, but then, he remembers....if the old Asher had lived to see this moment, he would have been miserable, abandoned, and forgotten.He reluctantly accepts his fate, ready to prove them all wrong.

The character with the highest difficulty and the worst performance, Baek Yuseol, was considered a trash character in-game because he could not use magic in a fantasy setting where everyone else could.However…[Because the wrong ending has been reached, 90% of Aether World has been destroyed.] [Please reach the “True Ending.”] Suddenly, those words echoed in my mind before I was transmigrated to the Aether World.[You can use the skill “Blink.”] “Just why did I possess this character?”Blink was the only magic skill I had.Surviving in Stella Academy among genius mages, I became the notorious Blink Mage.Alternative title: I Became A Flashing Genius At The Magic Academy