The Protagonist's Sister Is Actually The Strongest - Chapter 68: Annabelle’s Big Brother

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.

The most successful businessman of his time, who started from being a homeless orphan, died indignantly because of being plotted against by his most trusted aid, his own brother.

Ben, a postgraduate chemistry student, envisions a future where science unlocks the secrets of the universe. But fate has other plans. In a sudden twist, Ben dies and awakens in a strange new world, reborn as a five-year-old boy named Damian Sunblade.Damian's joy at being part of a noble family is short-lived. His family, valuing gold over blood, sells him off to another noble house to be groomed as a homemaker husband, a mere pawn in their political games. Struggling with his new reality and the remnants of his past life’s knowledge, Damian refuses to succumb to his fate.In his new household, Damian discovers that this world is governed by magic circles, Runic symbols wielding immense power. Driven by his scientific curiosity, Damian begins to experiment. Applying the laws of physics to the Rune symbols, he deciphers their secrets and invents his own unique form of magic.However, The family that bought him has their own plans for him, seeing Damian as a valuable tool to enhance their power. But Damian, ever the independent spirit, has dreams beyond servitude. He longs for freedom, a place to call his own—a life where he can use his talents without restraint.And so Damian devises a daring plan to escape. His journey is fraught with danger and intrigue, as he navigates a world filled with mystical creatures, powerful adversaries, and ancient secrets. Along the way, he forges alliances and battles enemies, all while refining his magical and scientific skills.In “The Runic Alchemist,” follow Damian Sunblade’s epic quest for independence and self-discovery. Witness his transformation from a forsaken child to a formidable Alchemist, determined to carve out an extraordinary future for himself in a world teeming with infinite possibilities.

Ren thought getting sacrificed and becoming a holy spirit was rock bottom—until he discovered his divine wife, the Goddess of Magic, is completely broke on faith power. That means his remaining soul would completely disappear.Turns out magicians are the worst believers ever!Ren has a crazy idea: if magicians won't pray willingly, make them pray to access the internet.Starting with a simple magic forum, Ren introduces this fantasy world to the addictive power of online connectivity. Want Q&A sessions on spell theory? Pray first. Need to livestream your dragon research? That'll be one prayer, please. E-commerce shopping for rare magical components? Prayer required for checkout.The moment Ren becomes the God of Technology, this world's whole vibe goes haywire.What begins as a desperate faith-farming scheme spirals into something far bigger. Soon dragons are running delivery services, apprentices are binge-watching magical tutorials, and even gods are competing for subscriber counts. Magic cars cruise the streets, magic trains thunder across continents, and when apprentices start wielding magic ray guns against seasoned magicians, everyone realizes this world has changed forever.From a simple forum to consciousness uploading and biological immortality—when technology crashes into magic, the explosion reshapes reality itself.After all, why choose between science and magic when you can have both?