'Demon Slayer': Who is Muzan's "Mother" & Why Did He Kill Her? (2024)

Muzan Kibutsuji is the main antagonist of Demon Slayer. And while he has done numerous horrible deeds during his lifetime, Muzan is not important simply because he is a ruthless, narcissistic murderer, but also because he has a great story behind him, and in this article, we are going to talk about that story. Namely, fans of the series will know that one of Muzan’s most pronounced abilities is his ability to transform; so far, we have seen him as a woman, as a child, and in his regular form, but Muzan is probably capable of more transformations. In light of that fact, the series has also shown us that a transformed Muzan can lead false human lives, and in the Swordsmith Village Arc, we saw him as a child with a “mother” and a maid. This article will tell you everything about Muzan’s “mother” from the series.

At one point, during his search for the blue spider lily, Muzan turned himself into a boy and became the son of an unknown family under the name Toshikuni. The family he was living with was obviously wealthy, with a large library, as it had a maid. His “mother,” whose name was not revealed, was an older woman who seemed to care for her boy, not knowing who he was. When he found out about Nezuko’s ability, he murdered his “mother” in cold blood and the made who originally witnessed the attack.

The rest of this article is, of course, going to be dedicated to Muzan and one of his fake lives. Muzan’s notoriety is well-known to fans of the series, and it makes sense that they want to know more. In light of the most recent facts shown in the Swordsmith Village Arc, we will tell you about Muzan’s “mother” and some other facts that relate to the events depicted at the end of the arc. Be careful, though, as there will be spoilers in this article.

Muzan turned into a child to search for the blue spider lily, and as a child, he, of course, needed a “mother”

While he was the villain, Muzan was at the center of many dealings in the Demon Slayer series. The Demon King was the instigator of many events in the series, and his role in the whole plot cannot be overstated, even though he is the series’ main villain. As you might assume, this article is dedicated to Muzan and his ability to transform into, well, basically, whatever he wants; we’re not going to focus on the ability itself as much as we are going to focus on the repercussions of this ability.

Namely, we know that Muzan is a character with many amazing skills and abilities. But, while we have already talked about his offensive and defensive skills, Muzan also possesses a very specific skill that is a result of this ability to manipulate his body, which is a skill that basically all demons possess; but, in Muzan’s case, this ability has been taken to an extraordinary level, a level that enables the Demon King to become a completely different person if he desires so.

So far, we’ve seen Muzan’s original human form, that of a younger adult male, but we’ve also seen him transformed into a woman (a geisha) and, more recently, as a young boy. And while he retained the menacing aura in his eye in every form, the rest of his body was completely different, and there was no way – especially in the boy’s case – you could tell it was actually Muzan.

But, on top of that, he was also an excellent actor. He could completely alter his physical traits and personality to effectively play a desired role. He is a caring husband and father at the beginning of the story, he is a geisha in the Entertainment District Arc, and he is a darling, adorable son in the Swordsmith Village Arc. Of course, as a boy, Muzan had to have a family, so what did he do? He simply “made” one for himself.

It is not known how Muzan did it, but he managed to convince a woman and her maid that he was the family’s son; we would’ve loved to see the story behind that, as we don’t know whether he killed the original boy and took his place or whether he simply manipulated them somehow, but we sadly don’t know how Muzan was able to become a convincing son. It is easier to create a family of adults, as you can always meet your wife somewhere, but convincing a woman that she gave birth to you seems like a pretty complex task. But, Muzan was able to do it.

Be that as it may, just as the process behind his feat is unknown, so is the history of his “family.” He obviously lived with a wealthy family, as the house we saw him in was quite large, with a rich library, and had a maid, which was a sign of wealth. We don’t really know anything else, but we have seen Muzan in the family library, looking for information on the rare blue spider lily. We know that his false name with the family was Toshikuni, as that was the name that his “mother” used when she entered the library.

His “mother” was, of course, not his real mother. It was an older woman who seemingly cared a lot about the boy she thought was her son; she seemed to be gentle, and when she saw that “Toshikuni” was in distress (this happened when Muzan got news of Nezuko being able to survive in the sunlight from the dying Hantengu, which both shocked him and thrilled him at the same time), she immediately asked if anything was wrong. At the same time, the maid was carrying his tea for him (even as Toshikuni, Muzan retained his keen intelligence).

So, what happened next? Well, Muzan Kibutsuji did not care for the woman that acted as his “mother”; she was basically nothing to him, and while she might have shown him kindness and while she might have been a good mother to him, he simply did not care for her.

So, when he got news of Nezuko being able to survive in the sunlight, he was so excited that he did not want to be disturbed. His “mother,” sadly, continued talking and was asking about the book he had been reading, which annoyed Muzan so much that she simply destroyed her head and killed her without even looking at her. He also started to revert back to his original demon form, happy, overjoyed in fact, with the job Hantengu had done providing him with the information about Nezuko’s ability.

The maid, who was also there, was shocked and started screaming, but we probably think that even she had no clue as to whether the death of her employer shocked her more than the fact that the boy was turning into a monster in front of her eyes. Be that as it may, Muzan, as expected, killed her as well and then concluded that all of his focus needed to be shifted towards Nezuko from this moment on. And that is the story of Muzan’s “mother,” as we’ve seen in the Swordsmith Village Arc.

Muzan’s real parents have not been revealed

But, before we conclude this story, we would also like to tell you about Muzan’s real parents. First, you must know that Muzan was born sometime during the Heian period of Japanese history. The Heian period began during the late 8th century and ended near the end of the 12th century, which is a solid time period. But why is that important? Well, the present timeline of the story takes place in the Taisho era. The Taishō era is the era that covers the period from July 30, 1912, to December 25, 1926, corresponding to Emperor Taishō’s reign.

As you can see, Muzan’s real parents were actually born around a millennium ago, just as was Muzan himself. And while it makes sense that he, as a demon, has lived for such a long time, his parents died a long time ago. Who were they? We don’t really know. As far as his early life is concerned, we know the following.

RELATED:Demon Slayer’s Time Skip Explained! Spoiler, There Are Actually Two!

Muzan Kibutsuji was exceptionally frail during his childhood. While he was in his mother’s womb, his heart stopped more than once, and he was even deemed stillborn; it wasn’t until a few moments before being cremated that he actually started crying, showing all of them that he was alive. Muzan managed to survive, but constant medical problems scarred his life. He was always sick, and the constant issues resulted in him developing thanatophobia. He was willing to do anything to avoid death, but he was diagnosed with an unknown disease that would kill him before he reached 20.

He ultimately survived thanks to the cure of the unnamed doctor who took care of him, but that is all we know. We know nothing about his parents; we don’t know who they were; we don’t know if they were good or bad people; we don’t know if they cared for Muzan or not. This is one big enigma when Muzan is concerned, and we can only confirm that it is a shame that we never got more details about it.

'Demon Slayer': Who is Muzan's "Mother" & Why Did He Kill Her? (2024)

FAQs

Why does Muzan want to kill Ubuyashiki? ›

This is seen where Muzan clearly stated to his Upper Ranks that the Ubuyashiki Family themselves is one of the primary targets they need to eliminate and one of the primary reasons why Muzan was so disappointed and enraged with them was due to their lack of success in permanently ending the Ubuyashiki Family.

Why did Lady Tamayo kill her family? ›

Hiding his true intentions, Muzan offered to treat Tamayo's illness; when she naively accepted, he swiftly transformed her into a demon and left her to run rampant around the town. She killed not only her husband and children while on this rampage, but also a number of other innocent lives.

Who is Muzan's mother? ›

Mizuki Kibutsuji is Muzan Kibutsuji's biological mother.

Why did Muzan kill his parents? ›

Im late, but Muzan didn't want the chance for another breath of the sun user to be born, so he killed all of Tanjiro's family; except Nezuko because he saw potential in her and turned her into a demon.

Why does Muzan hate Tanjiro's family? ›

Summary. Muzan Kibutsuji's motivation to kill Tanjiro's family was to create a demon immune to sunlight, fulfilling his desire to be unstoppable. Nezuko's transformation into a demon immune to sunlight ultimately backfired on Muzan, leading to his ultimate downfall in Demon Slayer.

Why does Muzan want Tanjiro dead? ›

Muzan wanted Tanjiro dead because of his earrings. The earrings were given to him by Yoriichi.

How did Muzan become a demon? ›

Summary. Origin story reveals Muzan's accidental transformation into a demon due to experimental treatment with Blue Spider Lily. Muzan created demons by sharing his blood and seeks Blue Spider Lily to cure his sunlight aversion weakness.

What is the relationship between Muzan and Lady Tamayo? ›

Muzan Kibutsuji

In their initial encounter, Muzan turned Tamayo into a demon in order to cure her disease, hiding from her the true consequences of the transformation and so causing the death of her husband and kids.

What happened to Yushiro after Muzan died? ›

In the modern era, it is evident that Yushiro is still alive but takes an occupation as a painter painting pictures of Tamayo since he still has great respect and loyalty to her after all these years.

Did Muzan abuse his wife? ›

In his early years as a demon, Muzan settled down with five different women. However, because of his lack of empathy and sensitivity as a demon, he verbally abused all five of his wives to the point it drove them all to commit suicide.

Is Muzan's wife a human? ›

She was a human wife of Muzan Kibutsuji, who had assumed a false identity.

Why does Muzan want Nezuko? ›

Now, with the reveal of Nezuko Kamado being able to walk in the sun, despite being a demon, following the battle against Upper Rank Four Hantengu, the main focus of Demon Slayer shifts to Muzan's pursuit of Nezuko, who he now wants to absorb, in the hopes that she will aid him in his bid to become truly immortal and ...

Why did Muzan turn into a baby when he died? ›

During his final struggle, in an effort to protect himself from the dawn's light, Muzan adopts an enlarged demonic infant form, approximately as tall as a 3 story building when standing up. In this form he has very pronounced blood vessels across his body, small claws in his hands and fanged teeth in his mouth.

Who killed Tanjiro's family? ›

Later in the series, Tanjiro finds the same smell while strolling through the crowded streets of Asakusa, Tokyo. This is when the story reveals that Muzan Kibutsuji, the Demon King, killed the protagonist's family. However, the mystery behind why Muzan killed Tanjiro's family, the Kamados, remains.

Why is Kagaya Ubuyashiki so important? ›

Kagaya has a very unique ability. He might not possess combat abilities, and yet, he is respected by every single Hashira in the series. His heightened sense of foresight was crucial in avoiding casualties that could have crumbled the Demon Slayer Corps.

Did Muzan curse Ubuyashiki? ›

In a distant past, thousands of years ago, they are related to Muzan Kibutsuji, the progenitor of demons. Because their bloodline produced the first demon, the Ubuyashiki Family was cursed, and every male child born in the family would be born with a disease that would kill them before they were fully grown.

Who does Muzan regret killing? ›

He deeply resented the thought of having to spend the rest of his life avoiding sunlight during the day and having going out at night, and it was only then that he came to truly regret his foolish decision to kill the doctor before the latter had finished treating him with his medicine.

Why did Kagaya Ubuyashiki kill himself? ›

By completely erasing his fighting spirit, animosity, and hatred, Kagaya successfully concealed his true intentions, luring Muzan into a trap. It was only when Kagaya sacrificed himself by detonating an explosive to ensnare Muzan that the demon realized the magnitude of Kagaya's hidden emotions.

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