Level 4 Human in a Ruined World - Chapter 580

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?

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.

Sincere is transmigrated person, who gain a magical tiger eye in his left eye. with this eye he decided to change his ending and became the richest person

After dying, you wake up and realize you've been reincarnated as a background character who is judged as human trash.The decision to change your destiny comes instantly.Discovering that your identity isn't as simple as you thought, you feel favored by the heavens when you manage to become a powerful character.Katase: You won't fool me. I'll expose you for the pervert you are.Murayama: ...Thank you for saving us.Issei: Motohama, what happened to you? How are you so powerful?Rias: If you join my peerage, I wouldn't mind being yours.Sona: You beat me in the game. That means you're now my fiancé.Yasaka: Honey, Kuno wants a little brother.Kaori Houjou: Shinji-kun, let's go on an adventure.Kaede Kazama: Shinji-kun, thank you for saving me from that ball.Rie Sawada: Shinji-kun, I'll wait for you. You'll be my future husband, fufufufu...Changing known history and taking it in a direction not even his eyes could perceive, he didn't stop no matter what. Not even the other world was safe from his clutches.Lexia Von Arselia: My hero, and my future husband...Shinji advances without stopping.“I, Shinji Motohama, swear here and now that I will reach the top of both worlds.”