Bloodthirsty Conquest: How Muzan's Bloodline Curses The Demon World

Websince muzan originated from the ubuyashiki bloodline, the family has borne the burden of destroying him. In this way, the generations of ubuyashiki's deep hatred. 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.

Webit is revealed that muzan brought the hereditary curse upon the ubuyashiki family that condemns their members to die at young ages of sickness, due to him originally hailing. 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.