The Slender Waist - Chapter 769 - 549 Congratulations are in Order

What is a Lycan to do when the world begins to end around her?Exactly as she pleases, turning life after the apocalypse into an adventure to make the world a more fun place. At least for her.When portals open to other worlds, an influx of mana crashes the grid and the monsters and cultivation techniques of fantasy novels become her new reality, she can either embrace change and stand atop the world as a hero or die in obscurity.It had been almost a month since the first portals opened, since mana spiked into the long dormant ley lines of Earth and blew out the majority of the world's power grid. Almost a month since humanity found out they weren't alone in the universe, that in fact they'd never been alone even on their own world. Since the handful of remaining Fae, the vampire and witch covens, the werewolf and Lycan packs had become public knowledge. Knowledge that many were not at all prepared to accept.The leaders of the various supernatural factions had convened and decided that hiding our presence was no longer in our best interests, that it was more important to control public opinions than to continue to exist in anonymity.And that's where our story starts

The Void Demon Realm invades, and Shu Feng awakens to become a Spiritualist, coming into contact with the true reality of the world.No one knows that he has a Mysterious Base within his body which could use Void Demon's power to enhance his body.

Kim Jeongjin, an editor of a publishing company on the brink of closing due to bankruptcy, ends up transmigrating inside a fantasy novel as the incompetent youngest son of a wealthy family.

And here he thought that he should live a rich life in this life…

“Why was I given a high-level skill? Don’t even bother!”

He is a young man without a spirit root. It is believed that this denies him the chance at cultivation. However, a mysterious lady imparts a Supreme Demon Classic to him and from then on, he starts his path of cultivation.
He undergoes a total transformation to emerge as the most fearsome and powerful fiendish demon in his era, that even immortals and fiends are fearful of him, and saints are at his beck and call.
Mastering the Supreme Demon Classic is the turning point in his life. He is able to unleash his immense and divine power from within, illuminating the entire universe!

- Description from Novelupdates