MTL - Cult of the Sacred Runes - Chapter 600 Trial tower six-layer title

Sato Yu is a 12-year-old boy. He is a deprived person. His life is depriving. His step father has a large amount of debt.

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, Ichinosuke, failed to get a job for 100 consecutive times. Furthermore, my record is still being updated as unemployed.

On my way to a job interview, I was involved in an accident with a truck and tragically passed away.

And then, a Goddess bestowed upon me the ability to grow at a speed 400 times faster than normal, before sending me to a game-like otherworld.

However, knowing that I would not become stronger even if I continued growing while jobless, I aimed to get a job, but I found out that it was my terrible fate to remain jobless.

As my Growth Cheat and Jobless Cheat existed side-by-side in this otherworld, an adventure record, no doubt certified by the job-placement agency as a harmful book, begins here.