Demon hunter's Cooking Manual - Chapter 1155 - 97 Confirmation!

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.

[Mature novel containing NETORI not NETORARE]Allen wakes up in a new world, but not your average “I’m a hero now” fantasy—nope, this world is full of hot beastkin babes, seductive elves, and spicy situations that he never asked for. With no memory of how he got there, and no clear path to fame or fortune, Allen discovers a few wild abilities that’ll make you squirm in your seat.When he realizes he can make women fall for him with just a few sweet words or the flick of his—well, you get the idea—things get out of hand fast. Turns out, the ladies in this world are more than happy to share their affection with a guy who knows how to use his mouth (and other parts). But there’s a twist. Allen’s mission isn’t just to woo them—he’s taking them.From beastkin to elves, noble women to princesses, Allen’s on a mission to steal them away from their husbands, boyfriends, and anyone else who thinks they’ve got a claim. His skills? Let’s just say they’ll make you blush and beg for more.[MC is not an ugly bastard]

Born as the daughter of the last martial artist of this era, that is Yeon. Her father is the world’s greatest fighter and is respected by everyone. The only problem was…… “I know it’s impressive, but I don’t have to follow in his footsteps, do I?” Her stubborn father’s dream was for his daughter to also follow the path of martial arts. Naturally, Yeon’s life was filled with grueling training. Living a dull life, Yeon’s only hobby was reading romance fantasy novels before going to bed. “If only I could live as a lady once……” After making a wish, Yeon fell asleep and entered a novel as if she were dreaming. However, her enjoyment is short-lived when she realizes that it’s not a romance fantasy, but rather a martial arts novel. “It was my dream to be a possessor, but of all things, it had to be a martial arts novel, and in the body of a supporting character who dies early!” Feeling indignant and weeping, she suddenly notices her own reflection in the mirror. It was a glamorous image. ‘Hold on. Does this mean… I could become a lady?’ Moreover, in this world, there was a man who looked exactly like the male lead in her favorite romance fantasy. He was handsome and talented, but with a wretched backstory. “Things are going to be different now.” The fate of a supporting character who dies early? Forget about it. Whether they’re followers of the devil or a heretical sect, even the worst villains don’t scare her. Why? Because she is the strongest possessor in history. This is the story of Yeon’s adventures in the martial arts world, as she stumbles along in pursuit of everything she desires.

He was a school bully and she was a straight A student. One day, she received a message that he wanted to meet her after school. She was very scared of being bullied, so she sought help from her teacher, who was also his father. Therefore, his father came to meet him after school with a broom on hands and beat him up.“You little brat! How dare you bully the top student in our class! Just wait and see how I'll punish you!” said his father angrily.“No! Dad! This is a mistake! I just wanted to pursue her!”“You're clearly not good enough for her! Stay far away from her!”...Years later, in her wedding dress, she said to her best friend, “My husband used to be a school bully. He said that he was beaten up by his father on the first day he was planning to pursue me. Then, he was warned not to get in the way of my pursuit of Tsinghua University.”“Too bad! And what happened next?”“He also got into Tsinghua University.” She smiled.