MTL - Science and Technology Library - Chapter 1076 :support

That afternoon, Roland received the most absurd gift imaginable—his stepmom handed him a System literally.That’s right. Not a game console. Not money. A real, cheat-like System... the kind usually reserved for transmigrators and chosen ones.Except Roland had transmigrated eighteen years ago, and nothing remotely “chosen” had ever happened since—until now.The catch? It wasn’t just any System. It was the “Mother's Little Tasks” System, formerly owned by his doting (mysterious) mother. And its first mission?[Mission: Go on a blind date.][Target Options: Yukino Yukio (Mom), Yukino Haruno (Elder Sister), Yukino Yuki (Younger Sister).][Warning: Once locked, your chosen girl can never marry anyone else.][Reward: 1000 Points, one self-selected supernatural ability from Mall]Roland: “...What kind of twisted matchmaking app did I just inherit?”After reading the mission, Roland was stunned. An arranged romance at 18 was already bad—but a binding rule that prevented the chosen girl from marrying anyone else? What if he failed the mission? Would she be alone forever?“And this is supposed to be a System?”“Mom! What the hell is this mission?” Roland asked, his face darkening.“It finally triggered! All those Points I spent transferring the System weren’t wasted,” his mother replied cheerfully, ignoring his outrage.“You set this up? Why?”“You’re nearly an adult and you’ve never even dated. Of course I’m worried.”“I’m only eighteen! I have college entrance exams next year!”“Exams don’t matter. But youth without love isn’t youth at all.”“...Is that something a mother should say?” Roland muttered. Most mothers pushed their kids to study harder—his acted like grades were irrelevant.“What kind of mom does this to her own son? And why is Aunt Yukio even on the target list? That’s just insane!”“Well~, I don’t know what kind of girl you like. The Yukino family has all three types—mother, elder sister, and younger sister—so I gave you options.”

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.

“Even death can't stop me from reaching the top.”Alex clawed his way to the top through sheer hard work and ruthlessness, only to be betrayed by someone within his own group.Although he managed to kill the traitor, he lost his life in the process.But just when Alex thought it was the end, fate had other plans for him.Reincarnated into the world of a novel his girlfriend used to read, he was given a second chance at life.His goal remains the same, but this time, he awakened a mysterious system and surrounded by a harem of alluring beauties.Follow Alex journey through this vast new world as he uncovers the truth behind his reincarnation and the otherworldly goddess who made it all possible.

A little ruffian who fought recklessly without any morals and bottomline accidentally time-traveled to parallel space and became a Key Case Investigation Team agent. The huge change in identity had him creating chaos in the police station. However, a strange miracle system helped him repeatedly solve mysterious cases, turning him into an impudent ruffian detective!