Arranged Marriage: To Hear Your Voice - Chapter 183 My Little Wife

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.

Cole is a novel author.

He enjoys writing novels and even reading other's works as well.

But that's just it.

Reading and writing novels.

Those are the only things Cole enjoyed in his whole life.

And as the time goes by, even doing those are becoming boring for him.

But then one day, Cole recieved a mail!

The mail said that his work has been chosen!

In a contest? No.

Cole's novel was chosen by a Higher Being to make it a reality!

“What kind of bullshit is this?”

“Whoever sent this must have few loose screws in their head.”

Though, Cole didn't took the mail seriously.

“Huh?”

That is until he was sent in to his own novel!

Cole became Raven Obadiah of his novel!

Who is Raven Obadiah?

No Idea! He's just an Extra in the novel!

...Or is he really just an Extra?

Never should be exposed, just the two of them in their youth.「I’ll be making your meals from now on, Sensei.」I, Reiyu Tenjō, am a high school teacher.When I shared some food with my neighbor, it turned out to be my student, Yuunagi Nishiki. If this fact is discovered, I might be fired from the school?That’s why we signed a 『Neighbor Agreement』 in order to keep our secret.Since we both live alone, the plan was to help each other out when one of us was in trouble——but somehow, I got won over by his cooking.Instead of helping him, I find myself increasingly spoiled and dependent that I can’t live without him anymore.‘No, Reiyu Tenjō. He’s your student, someone you are not supposed to fall in love with!’Drawing closer and then apart——their love sways ambiguously like waves.A youth romantic comedy filled with secrets between a teacher and student begins here.

In the rebirth, in order to prevent the tragedy of the previous life from happening, Bai Yu decided to rush to the [Tower of God] at any cost, and face everything together with his sister!

However, Bai Yu, who was bound by the system, mutated his bloodline, and transformed into a black-scaled python seems to be developing on a completely different path from his previous life…

- Description from novelbuddy