This Life, I Will Be the Protagonist - Chapter 1076 Divine Game My World 21

My name is Joelson, and I traversed across the world. I arrived at a continent of sword and magic and became a noble sorcerer.

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.

In a world besieged by monsters, humanity's survival hangs in the balance. But hope emerges when every individual comes of age, bestowed with the chance to forge a bond with a hero. These bonds grant them formidable powers to combat the relentless threats lurking in the shadows.Enter Chen Ye, a newcomer to this tumultuous realm. Amidst a sea of aspirants, he discovers an unexpected trend: everyone gravitates towards heroes from the legendary series “One Punch Man.” While most covet the esteemed S-tier champions, Chen Ye discerns a truth hidden to others. He recognizes the unparalleled strength of the One Punch Man, a humble C-tier hero.Undeterred by societal norms and peer pressure, Chen Ye boldly selects the Saitama Physique as his ally during the pivotal graduation ceremony. However, his decision incites scorn and derision, broadcasted live for the world to witness.Mocked as a fool for his unconventional choice, Chen Ye retreats into a realm of silence, channeling his energy into rigorous training. Three arduous years pass, marked by relentless dedication and unwavering resolve.Then, as if scripted by fate, a transformation unfolds. The once-dismissed Chen Ye emerges not as a punchline but as an enigma—an indomitable force. Clad in the invincible guise of the Saitama Physique, he defies the very fabric of reality, rewriting the rules of engagement and carving his legend in the annals of history.

When he woke up, Zhou Yi became the jailer of the Heavenly Prison.

Fortunately, the fruit of longevity, but there is no way to protect the Tao!

In the chaotic world of the Xiuxian world, monsters and monsters are rampant, and there are many dangers. Zhou Yi decided to hide and practice for hundreds of thousands of years!

The situation is changing, time is passing.

The child who was let go a hundred years ago became the founder of the country.

The young man who was instructed a thousand years ago became the Supreme Elder of the Immortal Sect.

The pet that was raised 10,000 years ago has become an exotic and peerless demon king.

This is the story of a mortal who is immortal, sitting and watching the vicissitudes of life, the change of brokerage, and finally becoming the immortal god of immortality!

- Description from novelbuddy