Maybe a Fake Gintama - Chapter 591: Mental Fortitude Is Equally Important!

She had a lifetime of fake virtue without receiving a virtuous ending. In the next lifetime, she controls fates with the flip of her hand. To the jerk who wasn’t faithful, she’ll draw a premature death talisman for him. For the poisonous step mother, she’ll send a death flower. For the step sister who is two faced, she’ll personally rip off that fake pretty face!

But when she personally offered up her body to her nemesis because of a child who she had no fate with, something unexpected happened. The night of the big wedding, the groom changed and a cold and luxurious man pushed her down. “You can marry whoever you like, but you can only give birth to my children!”

- Description from Novelupdates

Li Fenglan, the number one person in the world of cultivation and an immortalization stage immortal, fell into qi deviation. He was spurned by thousands of people for doing evil things, split the Underworld River with a single sword, and had the whole cultivation world unify to beat him until his soul scattered. Only after his death did he realize that he was the villain in the novel.

Li Fenglan: This immortal has a swear word he doesn’t know…..

He never thought that a thousand years later, Li Fenglan would be revived inexplicably, and become a disfigured cannon fodder with all his spiritual roots crippled.

Then he discovered that something was wrong with the plot—

The Soul Condensation Tower in the forbidden area of ​​the Immortal Gate was established for him;

His Master who has resided in the upper realms for a long time, stands guard at his tomb in the lower realms

The main character who once used one sword to shake his heart spirit unexpectedly stole his corpse;

The distinguished reckless music cultivator good friend changed to cultivate the ruthless dao just to guard a trace of a remnant soul;

The Demon Master who was both good and evil was at odds with the cultivation world;

The unruly disciple used dead branches as hairpins, and from then on he only thought of one person.

It turned out that the whole cultivation world wanted to revive him.

Li Fenglan: I’ve received your kind regards, now you can get lost. Smile.jpg

- Description from Novelupdates

As an international mercenary, Feng Luo entered a technologically advanced parallel world during a mission.

After living several years in the new world, an online sci-fi game called War became popular across the entire Star Federation.

Desert Eagles, Barrett, AK-47, Apache, RPG… One after another, familiar gears awakened his memories of the past!

Terminator, Zerg, Resident Evil, the Force,… The missions that appeared after a system update made him even more suspicious and shocked! As such, Feng Luo entered War and became a sniper.

- Description from Novelupdates

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.