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In the Ancient Era ten thousand years ago, humans were still in a state of ignorance.
Monstrous demons dominated the world, unbeatable and incomparably more powerful than humans who had no ability to resist and could only serve as food for the Demon Clan.
Until one day, seven thousand years ago, seven rays of starlight descended from the heavens above, crashing into a tall mountain, instantly splitting the peaks into seven cracks.
Seven resplendent streaks of starlight flew out from the crevices of the mountain, each entering the body of seven individuals, granting them immense strength comparable to contemporary demon emperors, and the ability to summon Divine Weapons of starlight, which they used to sweep away the demons and raise the Human Race from the ashes.
These seven individuals were the original Seven Demon Slayers Lords.
