Desolate Era - Book 4, Chapter 10 - [Nine Scrolls On Formations]

Wang Yi gets a key, opening a door in 2022 will lead to 1982, and opening a door in 1982 will return to 2022.

Two very different great eras appeared before him:

Abundant dietary protection, developed industrial products, miraculous medicines, and explosive information, this is 2022.

Simple folk customs, rich wild resources, scattered antiques, and treasures of the age, this is 1982.

Traveling between these two eras, Wang Yi didn’t think much of it, he just wanted to live a good life.

- Description from novelbuddy

Vampire Slave Number 43, or the self-named, Azriel Ruinous, learned about the history between the humans and the Vampires and it filled him with rage and hatred.

Nonetheless, he was helpless to do anything.

After years and years of suppression, the Vampires have become the weakest race in the world.

However, lady luck seemed to be on his side as Azriel found an ancient jar filled with mysterious blood that will not only change his, but his race's destiny as well.

This, will be the story about the rise of the self-named, Azriel Ruinous, and the Return of the Forgotten Blood Empire.

...

“Have you heard about the rumour?”

“What rumour?”

“They say that there's a Vampire on the loose, he's out there killing humans mercilessly”

“Hahahaha! That's the funniest joke I ever heard! Vampires? Those Slaves? Hahaha!”

“Yeah, I feel the same! I think someone just started this rumour as a joke! Hahaha! How can those weaklings kill us, humans?”

“True True…”

In a bar, two middle-aged men talked and laughed as they discussed the recent rumour they heard.

Seeing those two, a drunk old man shook his head as he sighed.

“Ignorance is bliss indeed…”

“These younglings do not know what the real fear is…

The vampires may have fallen… but my old bones still remember the days when they were in their prime…”

The old man sobered up in an instant and his body shuddered in fear as the memories of the long-forgotten horror appeared in his mind.

He then took a deep breath as he patted his trembling body and muttered.

“I just hope that they are not back…”

After dying in an oddly anticlimactic vending machine accident, Kazuki Ren is reincarnated in the demon realm—not as a hero, not as a villain, but as the only human male student enrolled at the mysterious Academy of Ruin, a school where all the professors are demon lords and all the students are powerful, beautiful she-demons.Ren is told he has one task: survive.But there’s a catch. The Academy’s darkest secret is about to awaken, and Ren holds a hidden power that could either destroy the demon world... or rule it.Now surrounded by seductive demons with hidden motives, eldritch tomes, forbidden dungeons, and twisted exams, Ren must master his ability—or be consumed.Magic, mystery, danger, and temptation await in this dark academia harem fantasy.

To save a doomed fantasy world, I killed the main characters, then destroyed the game world, and fell into another timeline as the academy's top seat and rival to the protagonist.Now, I'm trying to save the world and steer it towards a better ending…But I'm the final boss.