MTL - After Being Sold Out By The Empire, I Decide To Assist The Demon King - Chapter 381 sooner or later

A calculating merchant of noble birth lives a comfortable life managing his guild's business at the Imperial Academy—until lightning strikes him, leaving him with prophetic visions of a disastrous future. In these visions, he's expelled from his family, branded a traitor who aids demons, and worst of all, becomes a penniless beggar. When the supposed “protagonist” of these prophecies enrolls at the academy, he realizes his countdown to ruin has begun. Now he must use his foresight to rewrite a story where he's cast as a third-rate villain, all while navigating ancient dungeons, demonic threats, and the troublesome “hero” who might be the key to changing his fate.#MoneyIsEverything

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.

She, the “godly doctor” of an assassin organization in 21st century, transmigrated into the body of Yun Family’s abandoned, good-for-nothing Ninth Miss. Good-for-nothing? Then she’ll let the world see what a real good-for-nothing looks like. Summoners are legendary? Nothing is impossible in this world! She’ll become the first Magical Summoner.

If you ever receive a letter offering you admission to a university in another world, do yourself a favor and toss it straight into the trash—especially if that university trains girls to transform into giant mechs and battle space aliens.No. Just no.Believe me, I know from experience. What once seemed like a dream is now more of a nightmare. My name is Zaft Callahan, and I enrolled in an engineering support course on the cyberpunk planet Xyraxis. At this university, genetically-engineered girls are trained to transform into giant mechs called Warfare Augmented Intelligent Frame Units. My goal is to become a support unit for these WAIFUs in their battles against Cosmic Beasts, using the Weaponry Enhancement Engineering Bios System.Little did I know I’d be partnered with my high school nemesis—Myrrh Alicent, a beautiful WAIFU. Together, we must navigate this university’s endless twists and turns, win tournaments, battle Cosmic Beasts, and even uncover the mysteries of an Outer God. And as if that weren’t enough, we still have to face the ultimate challenge: surprise quizzes in advanced calculus.What to expect:Cyberpunk World Isekai.First Person View of a Male MC with an overpowered Support System with LitRPG elements.Female MC turns into giant mech. What else do you want for a WAIFU?Slice of university life full of brainrot comedy, fluffy romance, and some weird ecchi.Space battles, mecha tournament, and eldritch horror enemies.