MTL - Ranger King of Azeroth - Chapter 846 mirror armor

The boy who Sneaks in My Bedroom Window

“Those who defy the heavens must be prepared to pay the price.”Zhu Rong dared to forge a divine grade weapon in the mortal world, an act the heavens deemed a challenge to their authority.In response, the tribulation descended with fury, striking him down and ending his life in a blaze of divine wrath.But death was not the end.In the moment his soul scattered, he awoke once more... in the body of his 17 year old self.With his memories intact and the mistakes of his past laid bare, Zhu Rong is granted a second chance, to repair the regrets that once shackled his heart, to reclaim the strength he once lost, and to finish the masterpiece that cost him everything.This time, he will forge his legend anew.And this time, not even the heavens will dare to stand in his way.

In Academy City, magic and science coexist in an unwavering power struggle. Toma Kamijo, an academically-challenged student in Academy City, wields the power of the Imagine Breaker in his right hand, which allows him to completely negate all supernatural powers – as well as his own luck. When he happens upon a mysterious nun named Index, whose mind has been implanted with the Index Librorum Prohibitorum – 103,000 ancient texts banned by the Church – Toma’s luck is about to be pushed to its limits when he finds himself in the middle of a war he never expected!

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.