Very Pure and Ambiguous: The Prequel - VPAATP - Chapter V4C174 – Failure

An angel made a mistake, resulting in Shiihara Daiki’s death. In order to hide the mistake, he was then sent to a different world. The angel will grant him one wish as a payment for keeping it a secret. Daiki asked for a Heavenly Castle floating in the sky without hesitation.

Suddenly a floating castle appeared in the new world, which causes confusion amongst the people. They attempt to contact Daiki in various ways. A country tries to steal it by force, while another seeks to befriend him. What in the world would Daiki do?

“Why is the thing you summon always so strange, can’t it be a little more normal?”

Lu Yu looked helplessly at the guy who was waving his tentacles in front of him.

“Who made me look up to see you every day…”

- Description from novelbuddy

All her life, Eleanora did everything to make him love her but in the end, what she got from him was her execution for a sin that she never did.

Before dying, Eleanora coldly stared at his bloody red eyes as he lifted up the sword to execute her…

“I will never forgive you for killing me and my child.”

For the first time in her life, She saw his anxious gaze.

But it was too late as the sword in his hands had already landed on her neck, separating it from her body.

Eleanora finally thought everything was over but then she opened her eyes again, to find herself back in 12 years in the past when all the misfortune was yet to happen.

She was firm to change her tragic ending this time but it was not only her who changed…

“Even if you hate me, you can only be mine in your every life… My Empress.”.....

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.