Where Do Demons Come From in Demon Slayer?
Demons in Demon Slayer are created when humans receive blood from Muzan Kibutsuji, the first and most powerful demon. Simple and terrifying!
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Honestly, demons come from getting a severe case of Muzan's blood infusion.
In Demon Slayer, Muzan Kibutsuji is the original demon who creates other demons by sharing his blood with humans!
Muzan Kibutsuji is the baddie who creates all the demons by injecting his blood into humans. So, thanks (or no thanks) to him!
Muzan Kibutsuji's blood turns humans into demons, so they basically come from his not-so-friendly transfusions.
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