Webeven if the demon saying his last name didn't do it with any bad intentions, the curse would activate, removing their regeneration and causing muzan's cells to multiply. Webif any demon divulges his last name kibutsuji out loud, the curse activates, which causes their bodies to stop regenerating and allowing muzan's cells inside the demon to take. Webhowever, despite his death, muzan turned tanjiro into a demon by transferring his consciousness into him. As he transfers his blood and memories into. Webmuzan’s story arc is full of twists and turns that have shaped his character and the world of demon slayer. Key moments include his transformation into a demon,. 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.
