This is a Western fantasy world filled with swords and magic.
Humans and demons have lived on the continent since ancient times. The first generation of demon kings appeared five thousand years ago, and led the demons to enslave the human race for hundreds of years until the emergence of the first generation of brave men, the great demon, Fearless. The God of Light couldn't stand what the first generation of Demon King did, so he gave the Holy Sword Bairi. The first-generation hero held the holy sword and died together with the first-generation demon king.
After? That's the rest of the story.
Good, very good, very good