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|“||Persistent. You're all seriously persistent. And it bores me. It sickens me from the bottom of my heart. Whenever you open your mouth, you only remember that one dumb notion about avenging your parents, kids, or siblings. You've all survived. That should be enough for you. So your family got slaughtered. What's the problem here? Think of yourself as lucky, and go back to the way you lived life before. Look at it this way. Being killed by me is the same as encountering a great calamity. You don't need to think so hard about it. Rains, winds, volcano eruptions, earthquakes. Nobody tries to swear revenge on a natural disaster, no matter how many lives it takes. You can't bring dead humans back to life. Why not just stop fussing over the issue all the time, and live quietly to earn your daily wages. Most humans live that life. Why can't you all do that? There's only one reason. The Demon Hunters are an assembly of deviants. And I'm tired of dealing with deviants. I'm the one who really wants to put an end to all this.||„|
|~ Muzan sophistically rationalizes his crimes to Tanjiro and Giyu.|
Muzan Kibutsuji (鬼舞辻無慘 Kibutsuji Muzan) is the main antagonist of the Demon Slayer: Kimetsu no Yaiba fantasy action manga and anime series. He is the powerful Lord of the Demons. Muzan has the ability to inject his victims with blood that contains a virus that allows him to convert them into more Demons, and uses it to procreate his abyssal race.
Originally a human, Muzan was cursed over one thousand years ago and became the first ever demon. He is also the progenitor of most other Demons and the leader of the Twelve Kizuki. He is also the enemy of the Kamado family and the archenemy of both Tanjiro Kamado and Nezuko Kamado. He is the one that killed the Kamado family, turned Nezuko into a demon and made Tanjiro and Nezuko into orphans, causing them to begin their journey with the goal to make Nezuko as a human again and kill Kibutsuji.
He created every demon in existence and either programs or tasks them to devour humans, which makes their crimes fall into his shoulders as well. This caused many humans to die due to the countless demon creatures, creating a sort of war between demons and the demon hunters.
In the anime, he is voiced Toshihiko Seki in the Japanese dub (who also voiced Aaroniero Arruruerie (while disguised as Kaien Shiba), Rau Le Creuset, and Lord Embryo) and Greg Chun in the English dub (who also voiced Garou, Henry Wu, Gabriel Miller, and N'Doul). In the stage adaptation, he is portrayed by Yoshihide Sasaki.
Muzan Kibutsuji was born during the Heian Era of ancient Japan to a noble family. Ever since he was in his mother's womb, Muzan was extremely frail and weak. The menace of death constantly haunted him: his heart stopped more than few times when he was a developing fetus, he was declared as a stillborn upon birth due to having no pulse or breath. Had Muzan not wailed aloud, he could have been immolated at the funeral pyre.
His frailty persisted into adulthood, preventing him doing standard physical daily activities. Muzan was diagnosed with a very rare unnamed illness and should have died at the age of 20. His doctor then traveled all around Japan and found the mystical Blue Spider Lily. Using it as part of his medicine seemingly cured Muzan, but the doctor's cure was incomplete and Muzan still suffered occasional relapses. Muzan, having lived in fear of death through his whole life, mistakenly believed his doctor was a failure and killed the doctor out of rage.
However, as the time went on, Muzan eventually realized that he had become better physically and the doctor's medicine was indeed working, but he was unable to walk in the sun anymore. Muzan also realized that he had cravings for human flesh as sustenance; Muzan had now become a man-eating Demon. Needless to say his family was the first to fall victim to his grisly appetite. Although the now-Demon Muzan quickly adapted to his new life and had no qualms with feeding on humans, the thought that he had to avoid sun wounded his ego. He searched the entire country for the Spider Lily to overcome his weakness to the sun, but he was still unable to find it and the only person who knew anything about the Blue Spider Lily - namely the doctor - was dead.
Even after becoming a powerful Demon, Muzan considered himself imperfect and wanted to somehow get rid of his weakness to the sun. With the search for Blue Spider Lily going nowhere, Muzan chose another option: create demons strong enough to conquer the sun. That's why he decided to reluctantly utilize his demon blood to sire as much Demons as he could. He hoped that one day there would be a demon that would be able to overcome the sun and he could then devour them, ridding himself of his single flaw.
By giving a select few even more of his blood, he created a group of very powerful demons called the Twelve Kizuki who followed all his orders. Once he was almost killed by an incredibly powerful samurai warrior who possessed the "Sun Breathing" skill, being at a disadvantage and suffering a crushing defeat. Since his encounter with the Sun Breather, Muzan held a grudge against any Sun Breathers and killed any users in his way. Unknown to Muzan, this Sun Breathing samurai warrior who almost drove him to death, rescued a family by the surname of Kamado from Demons. Thus began the accursed fate between Muzan and Kamado siblings fostered.
Demon Slayer: Kimetsu no Yaiba
One time, Muzan traveled to the mountains where the current Kamado Family members lived and injected his blood into them in a bid to turn them into Demons. Muzan's demonic blood was too much for most of family members' bodies to tolerate, though, and they perished. Believing the Kamado family to be dead, Muzan left in disappointment. However, the eldest daughter, Nezuko, ended up receiving a considerable amount of his blood in her body and turned into a very powerful demon fledgling from the dose she received. Only Tanjiro Kamado, the oldest child of the Kamado family, remained human, being away from his home during the time the tragedy struck. To revert Nezuko back to human, Tanjiro began a long and perilous journey of taking on Demons as one of the demon hunters.
Eventually, Tanjiro Kamado coincidentally picked up Muzan's scent and approached him on an urban street. At first, Muzan didn't know who Tanjiro was until he saw a pair of earrings on Tanjiro's ears - earrings worn by swordsmen who use Breath of Sun swordsmanship; The same swordsmanship technique that once drove Muzan to brink of death. But since he is walking with his (human step-)daughter, he put up a kind facade and pretends to wonder who Tanjiro is. Tanjiro is mad at him and wants to kill him. In order to get away and distract Tanjiro, Muzan slices a random passerby's neck and turns him into a demon. While that demon attacks his wife, Muzan gets away with his family. Before entering the carriage, he tells his wife he has to do something and they should go ahead.
He then walks through an alleyway where a drunk guy bumps into him. The drunk starts mocking him and states, he doesn't like fancy-pants like him. When he adds, that he's so pale, he looks like he had died already, Muzan smashes him into the wall, killing him instantly. The muscular brother then angrily attacks him, only to be kicked into the air and be killed. The drunk's girlfriend holds his corpse, crying. He then rhetorically asks her if he looks pale or weak, then replied to himself, stating he is infinitely close to perfection. He then stuck his finger into her forehead. Due to her body receiving so much blood from him, that it couldn't handle the demon transformation, she melted away and died in a gruesome manner. Muzan then summons his subordinates, Susamaru and Yahaba, ordering them to kill Tanjiro: the demon hunter who seems to have a connection to the dreaded swordsman who used the deadly Breath of the Sun - the swordsman who is the only human came close to killing the demon lord.
After the demise of Kyogai and later Rui, the Lower Rank Five, Muzan was frustrated by the Lower Ranks constant failures. He called the Lower Rank One, Two, Three, Four and the current Six to a meeting, rebuking them and believing he no longer needed the Lower Ranks. As a result, Muzan started to kill the Two, Three, Four and Six one by one, as they respectively were begging for Muzan's blood, trying to flee, trying to deny Muzan's opinion and trying to think about flattering his master. Enmu, the Lower Rank One, was the only Lower Rank left. However, unlike others, Enmu showed no fear over the brink of death and even nonchalantly accepting it for pure excitement. Enmu's sadistic streak impressed Muzan, and he sent Enmu on a mission.
Muzan continued to send his Ranks to kill off the Demon Slayers. However one day, he felt that Nezuko was able to walk in the sun. He was so thrilled to consume her and finally reach perfection, that he immediately killed the family he was hiding at. He arrived at the Demon Slayer Estate and confronted their leader Kagaya. He predicted this however and sacrificed himself by placing bombs. Kagaya died and Muzan, heavily injured, was attacked by all of the Demon Slayers. All of them were transported to the Infinity Fortress, a place controlled by one of his Ranks. All of them were split up and Muzan took time to heal.
While the Demon Slayers fought and died and Muzan healed inside of a fleshy cocoon, all of his Ranks were killed, except the one controlling the Fortress. He burst out of the cocoon, fully healed and stronger than ever. Dozens of Slayers surrounded him, but he simply killed each of them and only grew stronger with each one he ate. Eventually, he confronted Tanjiro, who told him that he should no longer exist. Muzan was tired of them wanting to avenge their loved ones. In his eyes, they should see themselves as lucky and move on with their lives. Muzan told them that they should see his actions as a natural disaster, comparing his slaughtering to earthquakes or storms. Following the destruction of the Infinity Castle, Muzan nearly killed them. During the final battle against them, Muzan was very shocked that he aged 1,000 years old. And after that, the sun rises, causing Muzan to be afraid. When he was about to be defeated by Giyu and Tanjiro. He gets morph into a Baby Form in the armor of flesh. After a long epic final battle, Muzan's duty has been found impossible when he gets destroyed by the sun, disintegrated into dust.
Following his demise, the victory of the Demon Slayer Corps cost the lives of Gyomei, Mitsuri, and Obanai along with countless lives agents. Despite his death, the essence of Muzan in Tanjiro's body turns the Demon hunter into a Demon and attacks everyone by transferring his blood and his memories into Tanjiro's dying body. His will composed of deception through psychological torture in order to convince Tanjiro to live forever by remaining young and immortal. However, Tanjiro, ultimately rejects immortality and powers of demonhood with the combined support from spirits of fallen friends and family, along with Kanao, Nezuko, Inosuke and Zenitsu from the world of the living, leaves Muzan's malevolent spirit behind for good.
Thus was the end of Muzan Kibutsuji - his damned soul forever trapped in the black abyss of Hell where nothing exists and no one listens to him.
Beyond the Sanzu River
In this spin-off bonus chapter that deals with the immediate aftermath of the final battle against Muzan and Tanjiro's return to humanity, it is revealed that Muzan's soul is indeed condemned to Avici; the worst and the most torturous region of all hells. Here Muzan is seen in his true, Demonic form. Regarding his experience with the Breath of the Sun, he simply expressed, "Lousy".
He appears as a young man with pale skin and red glowing eyes and he has black curly hair. Muzan wears a white fedora along with a black suit and a white tie. When attacking, he reveals his fangs and his nails grow sharper and turn blue.
Muzan has the ability to change his appearance which made it so easy for him to hide from the Demon Slayers for decades. During his meeting with the Lower Ranks, he was disguised as an elegant woman wearing a long black yukata, causing the Lower Ranks to not recognize him immediately. Later he transformed himself into his latest cover identity, as the adopted sickly son to an old couple, taking the form of a young child with pale white skin and black neatly silky smooth combed back hair. His main outfit in this disguise being a plain white button-up shirt and black cargo shorts with long tube socks and loafers.
|“||Muzan. You... Are a being that must not be allowed to exist.||„|
|~ Tanjirou Kamado to Muzan.|
|“||The moment I saw him, I understood; that I was born into this world - to slay this man.||„|
|~ Yoriichi Tsugikuni's thought of Muzan in their first - and last encounter|
The author of Demon Slayer reveals more of Muzan's past in an interview that was not covered on the main story of the manga. Although possessing astute insight and keen mind due to being a member of the Ubuyashiki family, he used this family trait to make others suffer. Not long after turning into a Demon and was still posing as a human, Muzan married five times, but his extremely offensive diatribes and foul temper drove each of them to commit suicide.
As the leader of demons under the pretense of a civilized and innocent man, Muzan is deep down a callous, ruthless, intimidating, heartless, egomaniac and extremely narcissistic perfectionist with a horrendous self-absorbed streak. He never tolerates anyone who mocks him, even to the point of killing a pair of drunk bystanders who were simply rude to him, alongside their female companion, while proclaiming his own delusional grandeur.
He sees himself as perfect since he is immortal and very powerful. The only thing he's weak to is the sun. That is why he turned other humans into demons and spread his blood so that one of them might find a solution against the sunlight, so he can become truly perfect. He mostly wants to keep himself out of danger by using his allies and wants to enjoy his life without any harm coming to himself.
Muzan is also shown to be intolerant towards failure, shown when he purged the Lower Ranks after the death of Rui the Lower Rank Five, simply because he believed the Lower Ranks were becoming nothing but useless failures, and he only needed Upper Ranks to do his dirty work instead. In spite of this, Muzan spared Enmu, the Lower Rank One, because he admired Enmu's sadistic streak and gave him a portion of his blood which the latter had shown when facing certain death.
Muzan also sees his subordinates as nothing but useful tools towards them, and all of his subordinates were formerly human who followed him because of their hopeless life or sadistic streak. Muzan lures in people at their lowest to become demons, often corrupting them wholly. Rui, Gyutaro, Daki and Akaza are prime examples of this.
Behind the myriad of facades Muzan displays, and completely offsetting his insatiable ego and lust for perfection, Muzan has also proven to be quite cowardly. He always avoids conflict whenever he can, proven during his confrontation with Giyu and Tanjiro. He states that the duo managing to survive should already be sufficient and that they should just live to earn their wages and put a halt to the cycle of revenge. This trait also complements his manipulative nature, bending many demons to his will to do his bidding while he doesn't get his hands dirty. His cowardice was further proven during his confrontation with Yoriichi Tsukiguni. After arrogantly taunting and mocking the Demon Slayer, Muzan groveled and crawled away when he was defeated, trying to run away. Muzan has attempted numerous times to escape, either by splitting himself or merely running away, he also remarks multiple times for the Demon Hunters to just die and not give up fighting, once again cementing his cowardly nature. He subverts this cowardice in his last moments, accepting that he was going to die when burning in the sun, and deciding to leave behind a legacy by turning Tanjiro into the Demon King. While genuinely crying over Kagaya's words that all things die in the end, Muzan remains remorseless for the innumerable atrocities he has committed and dies as he lived - an agglomeration of pure evil.
To prevent himself from being exposed, he curses his subordinates in a terrifying manner so that none of them may utter his name, or else they will be killed instantly in a morbid fit of cruelty. This showed him to be extremely paranoid and fueled Tanjiro's disgust towards him, causing Tanjiro to believe Muzan is the only true demon in the world.
Muzan is very cunning and intelligent. He is perceptive enough to be able to seamlessly blend into human society and he even started a family. He can hide his evil side and put on a friendly facade if necessary. He is manipulative and can quickly get people on his side for him to use them. His cruel and imposing nature has gained him the great admiration of many demons.
- The name Muzan means "miserable, pitiful, merciless" (無惨).
- His first name, Muzan, means miserable as well as atrocity, cruelty, cold-bloodedness, tragic, pitiful, and merciless. Among them, "tragic" and "pitiful" are rather ironic because Muzan is a cruel person seeking to bring tragedy upon his victims, while his own past is anything but.
- Muzan's surname Kibutsuji means "demon dance" (鬼舞) (kibu) and "street, crossroad" (辻) (tsuji).
- It is revealed that Muzan came from Ubuyashiki family. Therefore, he and Kagaya Ubuyashiki resembles very much one another. In spite of that, Muzan does not use the Ubuyashiki surname.
- His design with the white fedora and curly hair, reminded a lot of viewers of Michael Jackson, spawning Internet memes.
- While the doctor who attempted to cure Muzan ended up turning him into a Demon and could be blamed for all the tragedies happening in Demon Slayer series, the manga depicts the doctor as a good, virtuous man. Muzan's demonization was purely unintended and accidental, as Muzan murdered his doctor during treatment.
- He is the only character who can genderbend, which is why Mukago and Lower 3 were startled when they realized that Muzan was impersonating a woman.
- Muzan is the only major character within the series to come in contact with an actual car.