Facts about demon slayer

facts about Muzan Kibutsuji

WifeMuzan kibutsuji wifeAnne was originally planned to be Muzan's older sister, who died by the hand of a Demon Slayer but that idea was scrapped, as the author knew practically nothing about Muzan's early life. Instead, Anne became his wife, by which he had two children.

Muzan is well over 1000 years old. Despite achieving an age that no one else has, his appearance makes him look like an adult man in his early to mid-30s. To get that look, Muzan drinks medicine that not only protects him from illness but keeps him looking young.

Akaza was also one of Muzan's favorite demons out of all his subordinates. The reason behind this is Akaza's extreme loyalty to his master. The Upper Rank Three demon was always sent away on special missions, something the Upper Rank 1 and 2 were often denied of.

Muzan is the powerful King of all the Demons, who has the ability to inject his victims with blood that allows him to convert them into more Demons. He uses this to procreate his abyssal race in order to replace humanity as the dominant species on the planet.

In , the Demon Slayer Corps is the only organization that works to defeat the demon and protect the people. Their primary goal is to defeat Muzan and put an end to this terror. However, defeating that monster isn't easy His strength is unlike any being in the world. Not only that, he hides behind the shadows and keeps changing his appearance. Tanjiro is the first demon slayer to encounter him. Not even the Hashiras ever got a chance to get a glimpse at him.

After Gyutaro's defeat, Kagaya exclaims how this is an omen that they will defeat Muzan, the stain of their clan, in this generation. Kagaya is known to have a calm and gentle demeanour. Yet, he expresses his disgust toward Muzan so openly. As the leader of the Corps, Kagaya's hatred toward Muzan is justified – but there's more to it than that. 

The history of the Demon Slayer Corps goes as far back as over a thousand years ago – when the first demon was born. Since then, the Ubuyashiki family has been leading the corps with the sole purpose of defeating Muzan.

The hatred between Muzan and Ubuyashiki family runs deep, and they want to eliminate each other. However, Kagaya reveals that Muzan is a blood relative of the Ubuyashiki family. Since they are the descendants, it makes sense for the Ubuyashiki family to want to destroy the stain of their clan. 

Because the Ubuyashiki bloodline was cursed for having produced the Demon Progenitor, all the children born into their clan would have weak and sickly bodies. The sickness is a genetic disorder that left the Ubuyashiki family with weak bodies and fewer than 30 years of life.  

While all boys will die before reaching the age of 30, girls will also suffer the same fate if they don't marry and change their surnames by the age of 13. The clan has maintained their bloodline by marrying their heirs to women from families of priests.  Centuries ago, the clan members consulted a priest to cure their curse. The answer they received was the reason behind their suffering, and it can only end with Muzan's death.