King of Titans and Dragons - Chapter 63 - Titan Clan Lands

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 light is here because the darkness exists. Just like that, the human realm exists because the demon realm is here. And in the great palace of the Blade Empire, a crown touches the peak of its glory before it falls from its grace. Lush Von Blade was the royal crown prince of one of the greatest empires on the southern continent. He is loyal but betrayed.On the other hand, where even the Gods fear to set a foot on, a demon lord abides. His grace and cruelty have been unseen for centuries. He is the supremacy in the three realms. While Lush is the light, he is the darkness. Each exists because the other is here.

Rezen suddenly found himself transmigrated in the parallel earth where magic is possible with the help of Mystic Gems. He was excited to reach the top when life slaps him hard and gave him the lowest level of talent

Fortunately, Rezen activated his Farm System. So what if he does not have the talent for cultivation? His crops are more than enough to make up for the lack of talent!

The orphan Sun Chan was abandoned by her first love. Her foster mother and sister sold her to the village drunkard, where she endured endless torment and ultimately died from exhaustion in the cornfield. After awakening, she returned to being seventeen years old. She vowed to leave the village this life and carve out a new world for herself! Family, friendship, and love, she will strive for them all. Hey, soldier brother over there, why do you keep looking at me?