Webbut given that muzan’s hat is undeniably western, it sure does seem like the anime has gone out of its way to establish the demon king as a malicious force. Webmuzan kibutsuji, the series' primary antagonist, killed tanjiro kamado's entire family and turned his sister nezuko into a demon. As the first demon in the world,. Webafter the physician treated muzan with medicine made from a flower known as the blue spider lily, kibutsuji became enraged at the lack of results and murdered. Webin infinity castle, muzan morphs into a massive flesh cocoon during the battle to dissolve the poison that transforms him back into a human. Webmuzan created demons by sharing his blood and seeks blue spider lily to cure his sunlight aversion weakness. Muzan's complex backstory and motivations. Muzan kibutsuji serves as the central antagonist in the ‘demon slayer’ series, holding the significant title of the first demon and the origin of all.
