Muzan Kibutsuji is the primary antagonist of the hit anime Demon Slayer: Kimetsu No Yaiba. He's the first demon of his kind, so he possesses immense power and intelligence. Muzan slaughtered the Kamado family and turned Nezuko into a demon. Therefore he shows zero mercy, killing humans and demons alike. While he disguises himself as a father, he can alter his form into a female or a child. Tanjiro plans to defeat him, and with the help of Lady Tamayo, he's well on his way.

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