Naruto: I am Uchiha Shirou - Chapter 315: Naruto: I am Uchiha Shirou []

After the nuclear war, the world was controlled by twenty mega-corporations that established a global government. Governed by AI, it judged everything.Gao Xin, who had only wished to live a peaceful life, inexplicably became a scapegoat for the elite and, unable to pay the imprisonment fee, was sentenced to ten years of exile on Crime Prison Island!On this island, there were no laws, no constraints, the only order being the numerous game arenas set up by the officials.The criminals could only participate like racehorses for the entertainment of the elite.Yet, on this prison island filled with Radiation, cyborgs, and many powerful villains, Gao Xin had no strength, no talent, and no background—like a sheep thrown into a crocodile pool, no different from being on death row.How could an ordinary person like him survive under the oppression of the strong, the geniuses, and the wicked? Unless in this world, there was a path, a path that allowed even the weakest to continuously break their shackles.

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.

Carlos Valois thought dying once was enough—until he woke up as a 10-year-old in the world of “The Dark Era,” a game he'd mastered in his previous life.Born as the last heir of a fallen noble house, Carlos discovers he's destined for a tragic fate: in six years, he'll be manipulated into joining the dark forces and killed by his own childhood friend. But this time, he has the ultimate cheat code—memories of the future.While other kids play with toys, Carlos hunts for divine legacies. Using his game knowledge, he performs an ancient ritual and steals a Demigod Mark from the thousand-year Sacred Oak—a power that should have remained hidden for decades.At 15, Carlos awakens as a Death Herald with broken stats that shouldn't be possible. Most Death Heralds are fragile summoners hiding behind weak skeletons. But Carlos combines his necromancy with stolen divine abilities, creating a hybrid build that turns him into an unstoppable force......[Skeleton Warrior has successfully evolved into Purple Thornblade Skeleton Guard!][Purple Thornblade Skeleton Guard has activated Bond: Glory of the Purple Thornblades!][Twelve Purple Thornblade Guards have formed an Undead Armored Knight Legion!].....His skeleton warriors aren't cannon fodder—they're elite undead legions enhanced beyond normal limits through secret evolution paths that took thousands of players years to discover.Every “coincidental” encounter is actually Carlos farming legendary opportunities. While his sister thinks he's just a lucky genius, Carlos systematically raids every hidden treasure, secret technique, and forgotten legacy he remembers from the game. Ancient bloodlines, divine artifacts, mystical cultivation methods—if it exists, he's taking it.With his infinitely evolving undead legion, Carlos set out on a path to rewrite destiny and become the supreme Death Herald legend.

Former bigshot, Ying Zijin, woke up one day as the lost daughter of the Ying family, who had been missing for fifteen years. The Ying family promptly adopted another child to replace her.Upon returning to the wealthy family, everyone mocked her for not being as clever, capable, sensible, and elegant as a fake heiress. Her parents considered her a stain on the family and warned her not to harbor any illusions of being a lady of the family. They said she should be grateful for being a foster daughter, or else they would send her away.Ying Zijin: “I’ll leave then. No need to see me off.”While the Ying family celebrated joyously and others waited to see the real heiress make a fool of herself, influential figures from various fields took action.The top-rated idol with the most influential fans said, “Miss Ying, just let me know if you need anything.”The heir to a global economic monopoly said, “Ying family? What’s that? Boss, should we just wipe them out?”The number one martial artist in the country asked, “Who dares to bully my master?”The genius teenage boy with an IQ of 228 said, “That’s my sister.”A man with an incredibly seductive appearance smirked lazily and casually, saying, “Sure, then call me brother-in-law.”The influential figures were confused.When the real heiress’ true identity was restored, it caused a sensation on the internet. The Ying family went crazy and knelt, crying and begging her to come back.