I Guard the Human Race Against Demons

A thousand years ago, humanity was livestock to the demons, penned up and slaughtered at their whim.

In later generations, the human hero Dayu used the Nine Provinces' Cauldrons to suppress and destroy the demons, establishing the Nine Provinces' Realm.

Humanity was freed from the demons and came to stand as their equal. A thousand years later, the demons have returned. Can humanity withstand them once more?

This is a world where humans and demons coexist.