Reborn as His Intellectually Disabled Wife - Chapter 14 - : Losing Oneself

A genius programmer creates the perfect AI girlfriend—only for her to become terrifyingly possessive. When an apocalyptic event threatens the world, she eliminates any woman who tries to recruit him to the cause. But when the villainess of the apocalypse takes an interest in him, will his AI love protect or destroy him?

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.

There is always the desire to be the strongest, the fastest, the smartest, and to reach the apex of everything. To some, they believe that talent determines everything. To others, hard work is more important. For many to reach the apex of any field a combination of talent, hard work, and determination is needed.

In a world where powerful demons, unkillable immortals, and strange monsters ran amok. Where human lives were treated on the same level as ants. Yoze, a young man who had transmigrated from earth to this dangerous world could only rely on his hard work, strong will, and his cheat, the Second Best System to that makeup for his lack of talent and resources.

With his desire to improve his family's life and his ambition to reach and surpass human limits, he set his eyes on passing the Scholar exam as he took his first step toward dominating the world.

“You are a genius of 1000 years. Okay, I'm a genius of 900 years.”

“You are the most talented runner in the world. That's okay, I'm fine with taking second place.”

“Having the most talent doesn't mean anything unless you use it. You are born with talent. I earned it. You are afraid of demons while I cherish seeing every demon.” Yoze smiled as he looked at the Immortal below his feet.

“I heard that Immortals can't die. Let's test that rumor.”

……………………………………………………………

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After learning about my girlfriend's infidelity, I got drunk and woke up in the world of the novel R-19.I became a character who is not even included in the extras of the novel — the useless and unnecessary daughter of the Duke de Walt. However, I didn't care about it, because I knew what this world was waiting for ahead.In the near future, the Ruvens Empire will be mired in chaos, and in order to survive it, I decided to quietly sit out in the manor enjoying a luxurious life. Everything went according to plan, until one day I made just one fatal mistake.A year after my rebirth, I accidentally found a wounded commoner in the forest. Out of pity, I decided to take her in and kept her. We lived together until I found out that this was the main villain who was supposed to die at the end of the novel. But because of my interference, the plot of this damn book continued with me!I have to run now! But where...?!After all, this crazy woman is now stalking me.— Where are you going, lady?— I… just went out for a walk.— Take a walk? The border of the empire is not the best place to walk. Let me walk you back.With the sword in her hand, I didn't have a chance to refuse.