Webthe confrontation between muzan and kagaya adds emotional depth and suspense to demon slayer's narrative. The presence of ubuyashiki's children in the. Webdemon slayer season 3 has ended, and one of the many things revealed during the swordsmith village arc was the backstory of the main villain, muzan. Webdemon king tanjirō is a name given to tanjirō kamado’s final demonic form after he had been turned into a demon by muzan kibutsuji. It was muzan’s final. Webdespite his fearsome reputation among slayers and demons alike, muzan had an illness that almost took his life in demon slayer, resulting in his intense fear of. 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. Webmuzan kibutsuji (鬼舞辻 無惨 kibutsuji muzan) is the main overarching antagonist of demon slayer: The new golden age. He is the demon king, the progenitor of all.