The Otherworldly Vampire System

The protagonist transmigrates to another world, gets a System, and becomes a vampire. As he grows stronger, he follows the story's plot: taking on evil god cults, gradually ruling the realms of humans, gods, and demons, then advancing into the void with the help of the demon race. He eventually becomes the world's guardian and battles the evil gods. That's roughly how the story goes. There will be some face-slapping and showing off, but the author's writing isn't very good. Feel free to give it a try, and point out anything that could be improved. I hope you'll join me in seeing this book through to the end and witness both the book and me grow.

P.S. I can't write a good blurb, so please read the actual story.

This novel and its characters are entirely fictional. Any resemblance to reality is purely coincidental. Do not imitate.