I've got a Succubus for a Girlfriend - Chapter 23: Kissing in Public

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.

When a glorious old civilization was toppled overnight, a strange purple moon rose and thus began the Purple Moon Era.

It had been two years since their marriage. However, every time he had s*x with her, he always did it from backwards.

She was more than angry. “Sheng Youting! Why do you avoid my face every time when you had me? Is it because that you are afraid to see it’s me rather than my sister that you get laid?!”

“Are you asking me to look at your face when I’m in you? OK, as long as you can bear!”

He was like a beast and all she could do was to accept what he gave…

Yu Lan had loved Sheng Youting for 11 years despite no response from him. Inferiority became part of her when she was with Sheng Youting. However, when she found it was so hard to continue her unrequited love and finally decided to exclude him from her world, her heart ached extremely and it nearly cost her life. It turned out that her love had become a habit and if it was stopped, she won’t be a whole man.

- Description from Novelupdates

Riven was nothing but a powerless runt until necromancers razed his village and butchered his sister before his eyes. As his blood soaked the dirt, his Sigil ignited, granting him a gift. He can die and reform, a cycle that resets with every rank he climbs.But fate wasn’t done screwing him.In the catacombs beneath the ruins, he found the Death Ledger—a death contract that bound him against his will to hunt those who’ve cheated death across dimensions. Historical legendary heroes and villains.From the noble King Arthur to the conqueror Genghis Khan and the fabled king of Uruk, Gilgamesh, together with Ivan the Terrible and Vlad the Impaler.Every mission is a gamble. Fail once, and the Ledger brands him a death-cheater, turning him into prey for the same immortal fugitives he hunts. And the reward? He gets to keep them as his undead summons.His enemies will not stop coming. They want the Ledger, the Sigil, his power. To survive, he will wield death itself, growing stronger with every soul he claims, because in a world this savage, only the relentless rise.[-Congratulations, you have successfully killed Alexander the Great and claimed him as your summon...you can start on the path of evolution-] The words, scrawled in blood, burned across the page of the Death Ledger.