Marriage First, True Love Later - Chapter 129

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

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.

Richard, who was born with a broken body, thought that this medieval world was outrageous enough, with knights, dragons, witches, and giant beasts.But he didn’t expect to meet Cinderella right after gaining territory. Her 1.8-meter-long legs were so charming that they could crush people to death.It turned out that this was a fairy tale world, or a dark fairy tale.Without saying anything, Master Richard directly helped Cinderella fill up her puffs.Wait, why does the system prompt that Cinderella is a witch? Or a yandere?The 36D dangerous Little Red Riding Hood, the white and tender Snow White, and the long-sleeping Sleeping Beauty are all witches.Different witches can bring different benefits to the lord Richard.Yeah!The master is going to overthrow the world, establish an empire, collect witches, and fill up!

Once upon a time, an Alchemist Grandmaster from the World of Immortals accidentally took possession of a playboy, who hailed from a rich and powerful family, and became a student in the middle of his midterms.

By the means of a miraculous immortal technique, he blended in and mingled amongst the femme fatales’ group to dominate the city! The nature of this novel’s origin is shamelessness to the core; having no sense of shame is just a basic foundation, but if the most shameless isn’t set yet, then become it!

- Description from Novelupdates