MTL - Peach Pit Landlord - Chapter 320 Girl's heart

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.

I became a side-character who died in anguish because of her good-for-nothing husband.

If I can’t avoid getting married, why don’t I change who I marry instead?

“Excellent, marriage sounds good.”

“Wise choice. Then let’s have a wedding ceremony that isn’t too ceremonious. Following that, I’ll need you to go down to the Fief and behave like the lady of the house until I call for you. Naturally, there won’t be any time to spend in leisure whilst dousing yourself in luxuries.”

“I’m not marrying you, but your father instead.”

“……Pardon?”

“I’m not going to marry you. Do you have a problem with that?”

Lothair is a serial killer who detest imperfection on human’s facial features, which resulted in him having a compulsory behavior of wanting to strip people’s faces.After he dies, he finds himself as Narcissus, a beautiful and adorable female NPC inside a state-of-the-art VRMMO world of the latest craze called Fallen Carcosa Online.But despite being a fantasy-filled game, the world feels strangely realistic.Too realistic, even.Game-like systems and magic exist but so do plagues, politics, economy, and the horror hidden in plain sight.When pried open, an actual human-like anatomy can be seen beyond the skin of the NPC’s face—with little to no censor.Everything feels too immersive.Except Narcissus, Lothair’s new identity.When Narcissus tried to scrape off the face of her new adorable body, she found an abyssal void with little to no end.This story marks the birth for the King in Yellow.Warning, this story contain: Male-to-Female Genderbend, GL/Yuri, Occasional Futa MC, Yanderes, Harem, Self-Cest.Follow the creative and attentive Narcissus, a nuanced former serial-killer who will gradually becomes stronger, experienced, maddening, horrifying, but also mature, wise, conflicted, and complex—in this near-endless journey.Where souls unsung and tears unshed.In the land of Lost Carcosa.

What’s worse than finding out you’re that Louis XIV when you’re a baby?

Of course there is, for example, it’s still a magic version.

- Description from novelbuddy