Supreme Husband System! & Supreme Wife System! - Chapter 3: System Awakening

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.

Coincidentally, indoorsy-guy Zhang Yang went to the cultivation world, being the lowest level of zombie. By using a manual book named: “ Tai Yin Refining Figures”, Zhang Yang find his own way to success and leaves a “If a zombie knows how to use a manual, nobody can stop it “ legend in the world.

- Description from Novelupdates

Travel through the world of Naruto and become a member of the medical department of Konoha Village and the corpse disposal team.

Uchiha Xia, with mediocre aptitude, originally thought that he would eat and wait for death for a lifetime, and then run away on the night of the genocide.

Until one time when dealing with the corpse of an S-rank rebel, I found that the back…

- Description from novelbuddy

The year is 2025. A devout Christian named Arthur Bennett wins a lottery to participate in a revolutionary virtual reality experience at a high-tech company called Elysium. The program utilizes a unique VR pod to immerse users in a world based on a popular anime.As the other participants—a mix of personalities with varying degrees of anime knowledge—prepare to enter the simulation, Arthur remains the only one who has never indulged in anime. Upon entering this new world, he discovers an unsettling truth: pain is excruciatingly real, despite the creators' claims of a dampened pain response.He eventually finds himself trapped in prison, unable to log out, and demanding to be released from the program. Calls go unanswered, and the world of ninjas becomes a nightmare where hunger, thirst, hygiene, and even death are all real.Angered that he was deceived, he abandons all sense of logic and vows to become a villain no one would have ever anticipated.