Tate no Yuusha no Nariagari - Chapter 309 - Straying Off Course

This is the stories of two different people from two different worlds (literally)

She was raised in love, while he was raised in hate

Her birth was celebrated, while he was despised

She was protected, while he was abused everyday.

She is gentle, warm and kind, while he is cold, cruel and vicious

But with the twist of fate, their world collided. They will learn from each other.

He will teach her to be hopeful and live for herself, while she will teach him the joys of Friendship and Love

Together they will learn to understand each other, accept each other and love each other, and soon their love will change the fate of the world

Princess: Can you stop staring at me while I'm sleeping?

The Lord: I can't…

The Princess: Are you gonna stare at me the whole night?

The Lord: Yes!

The Princess: Can you at least act like a normal man who will take advantage of a maiden while in her room.

The Lord: …this Lord would oblige

The Princess: WAIT… This princess is kidding, just kidding, wait…!

Travel to the primitive world, open up wasteland and farm land, tame animals and fish, build houses…

Jiang Xuan wants to create a tribe of his own!

- Description from novelbuddy

On the final night of his mother's life, young Synoh makes a solemn promise—to become a great general of the kingdom and honor her legacy. But after her death, grief overwhelms him, and he flees deep into the forest, where a chance encounter with a mysterious wolf changes his fate forever.Guided by the wolf's presence, Synoh returns home, finding renewed purpose under his father's strict training. Over time, he forms an unbreakable bond with the enigmatic wolf, but destiny separates them as Synoh embarks on a perilous journey to fulfill his promise.Facing fierce battles, political schemes, and inner doubts, Synoh must prove his worth to himself and the kingdom. Can he overcome the trials that stand in his way? And will fate one day reunite him with the wolf who first guided him back to his path?A tale of courage, loyalty, and destiny unfolds in this gripping story of a boy's journey to greatness.Hi this is the author,I hope you guys likes this story and thanks.

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.