The Crown Prince Who Raises a Side Character - Chapter 24: New Adventurer Bern (22). Clue

A million years ago, he had traversed the Nine Heavens and Ten Earths, braving countless mysterious Life Prohibition Zones, in search of a way to resurrect that foolish woman, but inadvertently learned one earth-shattering secret after another. Thereafter, he went through nine cycles of reincarnation, strategizing over the world, casting his net across the heavens, with the Myriad Realms as his board! In this life, he had returned from reincarnation, his Qi engulfing mountains and rivers, “It’s time to close the net...”

Song Xuanhe transmigrated into a book called “The President’s Seven Boyfriends”. He became the President’s cannon fodder ex-boyfriend, Song Xuanhe.

The Song Xuanhe in the book: 180 cm tall, so attractive he would trump over even the hottest celebrities, three generations of family in business–a very appropriate rich third generation.

It wasn’t a loss to transmigrate into this kind of person. It was just that this was a rebirth story.

The Song Xuanhe in the book abused the male lead 800 times and had even indirectly caused the male lead’s death. Faced with the reborn blackened male lead, his fate was obvious–not only did he reach rock bottom, he even died without an intact corpse.

Right now, he had become the cannon fodder ex-boyfriend that was foreordained to die without an intact corpse.

——

System: Don’t you think that the male lead has been a bit strange recently? It’s like he’s plotting something in the dark.

Song Xuanhe: Plotting how to kill me?

System: No, plotting how to eat you.

——

Song Xuanhe, who was lying on the bed with an aching waist, pained back and legs suffering from cramps, cursed the System 800 times–what happened to the male lead being a shou?!

Emphasis: Xiao Yuanmu is the gong! Xiao Yuanmu is the gong! Xiao Yuanmu is the gong! Moreover, the tycoon has always been a gong! Spoilers only up to here!

- Description from Novelupdates

Betrayed by his own werewolf clan and left to die in a forbidden vampire crypt, Lucien Drake awakens something ancient—something monstrous.His blood ignites the Crimson System, binding him to a long-lost vampire bloodline rumored to be more powerful than the vampire lords and deadlier than any alpha.Now reborn as a hybrid of vampire and werewolf, Lucien gains powers no being should wield. The System whispers, hungers, and rewards him for one thing: domination—of bloodlines, enemies, and women.With every kill, he evolves. With every seduction, his power multiplies. And with every conquest, the world bends closer to its knees.But ancient forces stir. Vampire princesses, werewolf queens, and dark priestesses all want him… dead, bound, or in their bed.In a world where the strong rule by blood, Lucien is rewriting the laws of nature—and he'll either claim the throne of night...Or drown the world in crimson fire.> “You think I'm a monster? You haven't even seen what I become when I climax with your queen.”

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.