System Mania! - Chapter 5: The Horde

At just four years old, Ryosuke Hyuga trains relentlessly in the Hyuga clan courtyard, sweat dripping from his brow and determination burning in his eyes. Once a member of the oppressed branch family, Ryosuke was destined for the curse seal and a lifetime of servitude to the main family. But fate had other plans.Reborn into the world of Naruto, Ryosuke awakened the Byakugan at birth — a feat unheard of even among the Hyuga. With his rapidly advancing eye techniques and innate talent, the clan hails him as a once-in-a-generation prodigy.Hyuga Hiashi, the clan head who temporarily adopted him, watches his progress closely. The moment news arrives of his newborn daughter's birth, Hiashi makes a shocking declaration:“From this day forward, you are the future husband of my daughter, Hinata. You will marry into the Hyuga main family.”No cursed seal. No servitude.Ryosuke will rise — not as a pawn, but as the shadow behind the Hyuga's future.

Sky is not born of Shen Huan, millennium is like night.

This is a rebirth who wants to release himself, and has an interesting life story after getting a less serious system.

- Description from Uukanshu

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.

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.