MTL - Pierce Heaven Til’ It Breaks - Chapter 1 Demon Forest

A teenager who unexpectedly gets transported to the modern world from ‘the world of the immortals’ . He finds himself in the body of an ordinary guy. He wants to go back to his world and for that, he will have to practice to get stronger and investigate the reason why and how he crossed through to this world.

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.

【Welcome to the Love Simulator】【You can freely choose to simulate with women whose appearance rating is 7 or above (on a 10-point scale) and have basic connections to your reality.】【The simulation is entirely free; please explore on your own.】【After the simulation ends, the system will evaluate the results and provide rewards.】【Current number of simulations: 4】【The number of simulations is not fixed and can be restored through special rewards or the passage of time.】Wait—why are all the simulation targets such difficult-to-handle 2D female leads?

Victoria Garcia signed a slave contract, but accidentally fainted in bed!“Arnold Johnson, you are a monster! You said you could wait three years!” She complained!“I would be less than one if I didn't take an opportunity after it presents itself!”Then, on a certain night...“You're a scoundrel and a scumbag!” Xiu Xiangwan yelled on the verge of falling apart.“I could be worse if you dare to test me!”“...”Arnold Johnson is the second child of the Johnson family, one of the six top families of business magnates and owners of Johnson Holdings. Everyone says that he was affably evil and elegantly ruthless, and he was said to have seized an opening to engineer his own brother's death, hence inheriting Johnson Holdings!Victoria Garcia was the daughter of a family who now fell to dire straits, pawning herself off to Arnold Johnson to keep her mother out of prison...