The Unspeakable Secret Between Humans and Demon Beasts!

One day, the entire world suddenly underwent a transformation.

Storms swept in, and exotic beasts mutated.

For a time, monsters ran rampant, humanity's population plummeted, and its territory shrank.

Then humanity's strongest fighters emerged, and people gradually established a foothold.

"What? You're saying we were one family tens of thousands of years ago?"

Han Gubei gazed at the monster before him, which was about as tall as a building, and fell into deep thought.

Are you sure you're not just saying that because you're afraid I'll beat you to death?

This novel and its characters are entirely fictional. Any resemblance to actual people or events is purely coincidental. Do not imitate.