A Time Traveller's Guide To Feudal Japan - Chapter 6 - Connections

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.

Orphaned at ten and betrayed by his guardian at nineteen, the protagonist's life spirals into darkness, yet some light remains, only to be cruelly extinguished when his girlfriend sacrifices herself during a brutal demon attack.As a result, he is bestowed with a mysterious system that imbues him with the strength, making him dedicate himself to eradicating demons.Upon defeating the Demon King, he is granted a reward and chooses to reincarnate into a novel-like world with sealed memories until age thirteen.Reborn as the second son of a Duke, he yearns a peaceful life and respite from his tumultuous past. However, fate has different plans.In a world full of political games and supernatural dangers, he finds himself caught in conflicts involving a transmigrator villain and a regressor protagonist.Amid noble family ties, surprising friendships, and veiled threats, he must find his way through this new life, all the while dealing with lingering scars and the chaos that threatens to engulf him and those around him.Can he truly find solace in a world determined to pull him back into the fight?Will he succeed in forging a relaxed and slow life amidst the relentless anomalies at every step?Read to find out!!

What would happen if a genius martial artist transmigrated into the world of swords and magic?Will he become the Ruler of the new world?OrWill he become the prey to the strong like a side character?Leon, a genius martial artist, was struck by lightning when he was on his way home.When the doctor said he was paralyzed from shoulder to foot, all martial artists cheered in happiness and held a party.Leon was a candidate to be the Ruler, so they were thrilled when they found out that he could no longer be a martial artist because they were scared by his extraordinary and unreasonable talent.They wanted to continue to be bosses in their regions and become idols for everyone, so news of his condition was like a heavenly song to their ears.The world's cruelty to Leon did not stop there.When a powerful earthquake shook the hospital violently, none of the doctors or nurses tried to save him, leaving him with no choice but to accept his fate as walls and medical equipment collapsed on him.But when he thought he was dead, he found himself transmigrated into a parallel world where monsters and powerful people ruled the world.Getting a second chance to live again, Leon decides to pursue his dreams like before.“Hmm? You mean there are two classes for awakeners in this world, and I awaken both the Warrior class and the Mage class?” Leon said as he touched his chin with his right hand.[That's right, Host.]Leon's lips curled up into a smile.“I failed to achieve my dream in my previous life. In this life, I will make sure to become the Ruler. I will stand at the top of the hierarchy and make everyone bow their heads to me.” Leon slowly lifted his head to look at the blue sky, remembering his previous life. “I will not let anyone or anything stop me this time. If the heaven tries to stop me again, I will make the heaven bow as well.”Follow Leon as he embarks on his journey to become the Ruler of the new world.* MC is OP at the same rank, too OP.Additional tags:Beautiful female leads, handsome male lead, multiple identities, secret identity, war, elves, fox girls, dragons, etc.