Muzan Kibutsuji

> *Only feelings are eternal and undying. That is true. I do not remember a single human being I have killed. Flesh dies and that is the end. However... their feelings passed on and never fell to ruin and have even defeated me. I have witnessed that fact with my own eyes and I was so moved that I trembled.*
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**Muzan Kibutsuji** is the main antagonist featured in ***Oni no Hokai:Demon Fall***.

He is the Demon King, the first of his kind, as well as the progenitor of all other demons in existence.  Muzan is also the leader of the Twelve Kizuki, an organization of the twelve strongest demons in existence that serve directly under him.

## Appearance

Muzan's physical appearance is like that of a tall and fairly muscular man in his late twenties with an unnaturally pale skin which can be easily confused as being unhealthy and sickly, curly black hair, and sharp, almond-shaped eyes. His pupils are vertical, like those of a cat, and colored plum red. He also possesses sharp, blue nails on his hands.

In his first appearance, Muzan was shown wearing a white fedora with a red ribbon and a somewhat extravagant outfit. The outfit consisted of an embroidered black tuxedo and a white tie over a black dress shirt and white dress pants. He also wore black loafers. As seen in Akabone's flashbacks of meeting Muzan, the Demon King sported a slightly different hairstyle and outfit in the past than he did in his first appearance. When he met Rui, Muzan's hair was straighter and parted down the middle. He also wore a loose-fitting tuxedo and a white half-cloak over it.

During his meeting with the Lower Rank demons, he arrived disguised as an elegant woman wearing a long black yukata, causing the Lower Ranks to not initially recognize him. Later, he transformed himself into his latest cover identity - the adopted sickly son to an old couple - taking the form of a young child aged 10 to 11 years old with pale, white skin and black, silky smooth, neatly combed black hair. His main outfit in this disguise is a plain white button-up shirt and black cargo shorts with long tube socks and loafers.

After he neutralizes Tamayo's poison and emerges from his flesh cocoon, Muzan's hair grows in length and turns white due to Shinobu's poison accelerating his age. He also grows numerous mouths all over his limbs, each one lined with a set of incredibly sharp fangs. His skin also appears to have a dark-red mass growing from the ends of his limbs and branching onto his body. It is later revealed that Muzan has an array of scars across all his body from the wounds inflicted during his first battle against Yoriichi, which were burned down into him to a cellular level and never fully healed despite hundreds of years. These wounds are not visible in plain sight and come to light as he weakens.

## Personality

Muzan is cold-hearted, ruthless, intimidating, and exceptionally intelligent. He sees no value in any humans he has encountered and shows little value in his own subordinates. Rarely ever visually upset or happy, he appears completely monotone and detached on most occasions, even when he callously murders his own subordinates. The only times he ever shows emotion are when his vision of perfection is moving forward or when he has subordinates completely submit to his will. The manga shows him to be more expressive, particularly when enraged and his facial features are exaggerated to demonstrate as such (possibly as a way to display his normally unreadable emotions).

## Abilities

**Overall Abilities:** As the first demon to exist and as the progenitor of all demons, Muzan is the strongest demon in existence and possesses tremendous power and attributes far superior to all of the Twelve Kizuki. His immense abilities were best displayed when he was able to hold his own against five Hashira and Kazetaro, Mitsuyama and Kazashi at the same time. He is later able to put Kazetaro in a state of near death by using his poison in a single attack and would have nearly killed Bushako, an incredibly strong Hashira, had she not been rescued by fellow Demon Slayers. Yamasuke, Yoshimi, Kaiten, and Yukitaro would have also succumbed to his poison and died if they didn't receive antidotes from Chachamaru. After approximately 30 minutes of fighting against the Hashira, Muzan manifested leg whips, which increased his attack speed exponentially, to a point where he instantly defeated the exhausted Demon Slayers. However, it is later revealed that Muzan is gradually becoming slower due to Tamayo's aging medicine, which has been affecting him the entirety of the battle.

**Absorption:** Muzan has displayed the ability to absorb, assimilate and dissolve organic and inorganic objects as seen when he began to absorb the flesh seed spike branches pierced into his skin, or when he began absorbing Tamayo and dissolving her drug. He's also surely capable of adapting to poisons even better than Upper Ranks, who became resistant to wisteria poison that kills normal demons in seconds, and he was able to adapt himself to resist a drug specifically made to transform demons back into humans.

**Combat Form:** When fighting, Muzan can adopt a more monstrous form, with a dark-red mass covering his limbs, featuring sharp-toothed wide mouths, with his torso exposed. His hair becomes longer, and messier . His speed, strength, reflexes, and power are greatly magnified in this form to the point that, despite having lost a great amount of stamina and endurance in fending off Tamayo's human transforming drug, he was still fully capable of easily outmaneuvering several low ranking Demon Slayers and consuming scores of them within minutes of emerging from his cocoon.

**Demonic Blood:** After consuming the Blue Spider Lily, Muzan developed supernatural blood with special properties that can transform humans into demons once ingested. His special blood also seems to give rise to a plethora of special abilities unique to demons such as powerful regeneration, the power to shapeshift, immortality, an accelerated growth rate, enhanced physical prowess and even supernatural abilities called Blood Demon Arts. Muzan can also further empower a demon by giving more of his blood, enhancing their preexisting abilities. However this is limited to how much blood the recipient can withstand and adapt to. If a human were to take in too much blood from Muzan, their body would mutate faster than they can withstand, causing them to self-destruct into one giant mass of flesh before disintegrating into ash. The same would also presumably happen to a demon if they couldn't withstand the blood's effects, as implied by Muzan.

**Demon Manipulation:** Muzan can control demons to a certain extent, as seen when he was able to take control of Nakime's body in order to try to force an absorption of Yushiro's cells in order to stop his interference when he attempted to usurp control of the Infinity Castle. However, this ability requires extensive concentration as Muzan immediately lost control of her the moment he lost focus due to needing to defend himself while in the middle of battle. Other demons can also wrestle control back from him.

**Extrasensory Perception:** Muzan possesses extremely acute senses that even allow him to perceive things outside the normal range of perception, which he displayed by easily discerning the presence of humans instantly even when they were scattered all around a mountain and detecting the wounded Demon Slayers regaining consciousness despite being far away from them. This was also shown when Muzan was able to discern the locations of Kazashi and Mitsuyama with great accuracy solely by the dust clouds rising and the sounds that they produced.

**Genius Intellect:** Having lived for over a millennia and gained further experience from the telepathic link with demons he control, Muzan is extremely clever and erudite. Since he has 5 fully functioning brains, it would most likely boost his intelligence and other mental capabilities such as memory and cognitive processing. He was also able to evade the Demon Slayer Corps for nearly a thousand years despite the leaders of the corps, the Ubuyashiki Family possessing great foresight and intuition, and has also used demons to create distractions somewhere far away when he wants to hide something from the corps.

**Immeasurable Speed & Reflexes:** Muzan is tremendously fast, possessing movement speed and reflexes that surpass the Upper Ranks of the Twelve Kizuki. During the Infinity Castle Arc, even after being weakened by a drug specially made to defeat him, he was able to massacre dozens of Demon Slayers before they can even react. Additionally, Muzan was so fast that Kazetaro and Bushako couldn't even see them and could only rely on pure luck and instinct to evade his attacks.

**Immeasurable Strength:** As the Demon King, Muzan's physical strength is stronger than all demons in existence. This was shown when he killed a grown man with a single punch to the face, causing him to fly back, hitting a building and causing cracks in it. He also managed to kill a bigger man by simply kicking him. Even after being severely weakened by the many drugs that weakend him, he possessed enough physical strength to destroy huge sections of buildings, create massive craters in the ground and lift the debris of buildings that trapped him quite easily.

**Unlimited Stamina & Endurance:** Like all demons, Muzan has absolute and infinite stamina and endurance, staying in optimal physical and mental condition all the time as well as being able to endure waves of onslaught as if it were nothing. This was shown when he didn't flinch nor show signs of pain or agony when getting slashed and pierced by the bright red Nichirin Swords of the Hashira, which was shown to cause immense pain to Upper Rank One, Koroikazuchi himself.

### Blood Demon Arts

**Biokinesis:** Muzan's Blood Demon Art grants him powerful biokinetic abilities. Muzan has displayed the ability to alter and control his flesh, limbs, and even his organs. Using his Blood Demon Art, Muzan can change his facial features, replicate and move the organs in his body, create weapons using his flesh and bones, contort his entire torso into a giant mouth, or even create flesh puppets that he can control. He can also split himself into hundreds of pieces that can reattach themselves and regenerate into his full body.

* **Shapeshifting:** Muzan possesses the most powerful and advanced shapeshifting ability out of all demons in existence. Not only can Muzan change his appearance flawlessly, he can also change his aura and presence which can even fool the enhanced senses of Lower Rank demons. He has used this ability to transform into a woman, a child and even a large cocoon of flesh.

#### Techniques

**Black Blood, Bramble:** Muzan uses his own flesh and blood to create several black spiked-barbed wires to entangle his target.

**Shockwave Energy Blast:** Later, upon being forced into a corner by Kazetaro and Yukitaro and weakened by Tamayo's four stage drug, Muzan showcased another unique ability of his Blood Demon Art, in which he morphed his torso and upper body into a gigantic beastly mouth. From this, he released a strong energy-like shockwave that damaged the nervous systems of those caught in it, causing extreme seizures and convulsions, even rendering them unable to breathe for a brief period of time. This attack was so strong that when Kazetaro and Yukitaro were damaged by this technique, even Kiriya and his sisters, who were connected to them through the crows in the area, received a brunt of the attack.