Toaru Majutsu no Index - Volume 22, Chapter 9: The time when a huge distortion has been corrected. Broken_Right_Hand.

“Stripped of his power, betrayed by those he trusted, and abandoned by fate itself, the young master of the Celestial Clan faces a choice: cling to the tattered remnants of his righteous path or to embrace the darkness blooming within. When a catastrophic fall strips him of everything, he, along with his fiancée by his side, abandons the righteous path. Witness the birth of an anti-protagonist couple, as they forge contracts with ancient, terrifying beasts and carve a new destiny from the bones of their enemies.”In the heart of the Azure Star Continent lies the legendary Celestial Clan, rulers of an unbroken legacy of power, wealth, and influence. At its helm stands Xian Tianyang, a prodigy born with unparalleled talent and destined to inherit the mantle of leadership. Calm, calculating, and relentless, Tianyang has forged a reputation as an unshakable force, a young master whose genius is rivaled only by his ambition.But the path to supremacy is fraught with danger. In a continent where alliances shift like desert sands and rival factions sharpen their blades, Tianyang must navigate a world of intrigue and betrayal. When his childhood fiancée, Lin Yuqing, the “Blooming Empress” of the Eternal Bloom Clan, enters his life, their union threatens to spark both alliances and rivalries that could reshape the continent.With ancient secrets lurking in the shadows, enemies plotting from every corner, and the weight of his family’s legacy on his shoulders, Tianyang must prove that he is more than just a prodigy—he is the heir to the Celestial Throne.Will their fates intertwine as destined rulers, or will the fires of ambition and duty tear them apart? Prepare for a tale of genius, power, and forbidden emotions, where every choice has the power to change the fate of nations.

“Meet. Befriend. Seduce.”

Those were the words promised which made him excited.

“Play Nightlife and date your favorite Vampire Girlfriend!”

—-—-

When Lukas purchases Nightlife, all he expected was dating all the girls and getting the sweet sweet “plot”. He didn't expect to be thrown into the world entirely!

What's a Vampire got to do to survive?

I was left paralyzed with only a month to live, but that “9-inch” part of me was still hard as a rock. Even the sickly beautiful schoolgirl couldn't resist my “pecker,” and to fulfill my dying wish, my sister even dressed up as a lady in black stockings to teach me how to “drill.” What's more outrageous, the hospital nurses wanted to make a little movie with me, lining up with the head nurse at the front...Just after coming out of the emergency room, I saw the system panel:Name: Ethan JonesGender: MaleLength: 9 inchesSkill: Hard as a Rock LV1Note: Peak human hardnessDying Wish: To caress auntie's sheer black stockingsTask Reward Points: 1000 pointsDespite my strength and stamina attributes being only at 1, and my agility at 0, only my “pecker” could lift the heavy blanket while doing squats. My face was full of question marks—what kind of bug is this system? Just because I like looking at auntie's legs, did it give me such a special skill?Now, I have no choice. I must complete tasks to earn points and add attribute points.However, the story actually begins 12 hours earlier...

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.