My Vampire Harem Will Dominate Everything - Chapter 3: Blood Bond

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.

What happens when a bored and hungry zombie woman who reads to fulfill her basic needs transmigrates into a dungeon apocalypse novel, the book that caused her accidental death?If she was a cannon fodder, it would have been better. Instead, she was the passerby who died after handing the female lead, the special ring- a great golden finger that ended the apocalypse.And she wasn't even mentioned by the female lead, who claimed all the credit for being the world's savior, forgetting her sacrifice.After understanding the situation and losing the ring, her first thought was to look for food and sleep.She doesn't want to be the hero of the world, she is kind to leave it for the female lead to hug all the glory.But the two men she saved randomly always hung around, unwilling to leave her alone, and a reborn female lead who kept staring at her with hatred.Update Time: Tuesdays and Fridays with two chapters each. (⁠〃ﾟ⁠3ﾟ⁠〃⁠)

What if an alien baby born in the midst of a major conflict on another planet was sent to Earth to save his life? Born with intelligence and the ability to create technology from any material he touches, he was found by a couple in rural Japan and raised like a normal human.Despite his powers beyond reason, living in a peaceful world forced him to restrain himself. He grew up as a young man who loved high-tech superheroes, but never had the chance to realize his dream of becoming a hero.However, everything changed when he and his classmates were suddenly transported to another world—a world of monsters, war, and chaos. Seeing the helplessness of the humans in that world, he realized that this was the chance he had been waiting for.Not with magic, swords, or ordinary physical strength—he would become a hero with technological sophistication that surpassed any civilization!This will be Ren Takamura's story!