Webmuzan kibutsuji (鬼 (き) 舞 (ぶ) 辻 (つじ) 無 (む) 惨 (ざん) , kibutsuji muzan? ) is the main antagonist of demon slayer: He is the demon king, the progenitor of. How did muzan become a demon? If he is the progenitor of all demons, who turned him into a demon? This article discusses the origin of muzan. 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. Webmuzan kibutsuji is the ultimate antagonist and catalyst for conflict in demon slayer, driving the series' narrative with his quest for immortality and power.
