Ashborn Primordial - Chapter 5: Into Darkness

After dying in the world of One Piece, he was reincarnated once again this time as Neji Hyuga. But fate was no kinder here. With his father dead and the cursed Caged Bird Seal looming over him, for his survival he made a ruthless decision....

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.

“Obtaining the topmost degree of talent in sword arts in the world requires giving up 72 years of lifespan, which leaves you with only five more years of your life. At the same time, you will never be able to feel love, kinship, and friendship, and you’ll end up leading a lonely life until your death, unable to procreate, or to have any descendants.

“From now onwards, everything related to happiness in the human world shall no longer be of your concern. Are you willing to accept this?”

“Hahahaha, I’m already alone bereft of all support, my hopes dashed to pieces, shouldering only absolutely irreconcilable grudge and hatred, why would I disagree? Why would I not want it? I couldn’t ask for anything better!!”

His sword sweeps across the Divine Continent for seven days and nights, moving 90,000 miles through the starry skies, unhindered.

He slays saints and buddhas in Heaven, slaughters demons and devils in Hell, sweeping away all the grievances in his heart.

[Interstellar+Spiritual Power+Pure Romance+Marriage First, Love After+Livestreaming+Gourmet Food+Disguises]Reborn overnight, Qu Tong cried to death; her vast wealth was gone, and she even ended up owing a billion in taxes.Stuck with a cheap husband her cousin didn't want who can't have children? Rarely comes home? And throws in an entire planet to boot?Qu Tong wondered if there could be such good fortune?She carefully guarded her full fertility value, perfunctorily yet sincerely playing the role of a big shot's dainty wife.She grew energy fruits and vegetables, fed them on schedule, and incidentally improved the food for the entire squad by taking care of their home.The Insect Clan attacked, His Highness was injured, ditching class to visit, pah! To check in.His Highness was too aloof; unable to charm him after a long time, she went online searching for strategies and even inquired about how to reasonably inherit all of her husband's wealth in the case of divorce.The next day, Si Yuting glanced at the top search trends, then looked at his guilt-ridden dainty wife and laughed, “That's difficult, considering I'm just divorced, not dead.”Well-behaved and clever in front of others, behind their backs she did nothing of the sort.When her shop was reported, she cursed everyone who dissed her in the comment section one by one and blocked them all, leaving the netizens stunned: “Who taught her to curse like that?!!”In the academy competition, the enemy lacked honor, ganging up to bully the weak; Qu Tong pulled out a potion, directly turned the tables, and kicked them all out of the competition—no one can play me for a fool.When encountering a Star Thief, Qu Tong reassured everyone, ”Don't panic, I'll go reason with them.“ Then she single-handedly drove her mecha, cornering the Star Thief: “This is a robbery, hand over everything valuable.”...One day.Qu Tong, holding her medical report, asked, “If I say I can reproduce asexually, would you believe me?”“Guess.”