Hashira's Training Arc

After the events in the Swordsmith Village, Amane Ubuyashiki held an emergency Hashira Meeting. She informs the Hashira that since Nezuko Kamado is able to conquer the sun, Muzan will go after her and the time for an all-out battle against him and the demons is approaching soon.

Since Demon Slayer Marks started appearing after Tanjiro Kamado unlocked his first, she requests the Hashira to train themselves to unlock their marks and that any Demon Slayers with marks regardless of their status must participate.

The Hashira agree. Gyomei Himejima then announces to the other Hashira that he has a proposition on how to tackle this.

Sharing the idea of a training program, he requested every Hashira to set the contents of their training and get their preparations done for it.

Because of their busy schedule which includes protecting their assigned regions, gathering information on demons and improving their swordsmanship, Hashira normally did not having time to train anyone other than their successors, the Tsuguko, but since Nezuko conquered the sun, the demons stopped appearing and Hashira only have to focus on night patrol and day training now.

The extra free time allows them to train lower-ranking Demon Slayers as well.

Uzui has one arm, and wears an eye patch on the right eye, since in one of the missions he lost his right eye and left arm, he is retired.

Obanai wears a bandage mask around his mouth, he and Mitsuri love each other, but while they are in the headquarters, they act professionally. Shinobu mocks Giyu sometimes, but it's nothing beyond a play between them, Giyu is very quiet.

Muichiro is 14 years old, yet he's a Hashira. Muichiro Tokito has long, black hair with turquoise tips, unkempt bangs, two small clumps of hair on each side of his head, and large, empty-looking mint-green eyes. He has a short, lean physique and wears the standard Demon Slayer uniform with a turquoise tint and unusually long, loose, kimono-like sleeves and large, baggy trousers. He typically wears dark blue tabi socks and white zōri with dark blue straps.

Giyu Tomioka is a tall, lean, and muscular young man with choppy black hair tied in a low ponytail and sharp, dark blue eyes. He wears the dark cyan Demon Slayer uniform with white leg wraps and a distinctive haori that is half solid red and half patterned with geometric green, orange, and yellow squares. His expression is typically stoic or emotionless, complementing his pale skin.

Gyomei Himejima is the Stone Hashira, a towering, muscular man with short black hair and a prominent forehead scar. He is blind, possessing white eyes without visible irises or pupils that often tear up with emotion. He wears a Demon Slayer uniform with a distinctive green happi draped over his shoulders, a large red beaded necklace, and carries prayer beads.

After the Entertainment District arc, Tengen Uzui's appearance changes to reflect his severe injuries, as he loses his left eye and hand. He now wears a long, burgundy-colored yukata with a white collar and a blue haori, secured by a pale pink obi sash, to cover his missing limbs.

Sanemi Shinazugawa is a tall, muscular man with short, spiky white hair, pale purple eyes, and a face and body covered in numerous scars from fighting demons. He typically wears a green-tinted version of the standard Demon Slayer uniform, unbuttoned to show his chest and abs, along with white zori sandals and tabi socks. A key identifying feature is the kanji for "kill" (殺) etched on the back of his white haori, which he often wears open over his outfit.

Shinobu Kocho is a petite woman with black hair fading to purple, styled in a butterfly-shaped bun, and large, dark purple, pupil-less eyes. She wears the standard Demon Slayer uniform, characterized by a dark purple jacket and pants, a white haori with a fading butterfly wing pattern, and a butterfly ornament in her hair. She completes her look with white sandals with purple straps.

Iguro Obanai is a young, short man with black, layered hair and distinctive heterochromia, his right eye being yellow and his left teal. He is known for the white bandages covering his mouth, which hide a large, snake-like scar from his childhood, and for his signature black-and-white-striped haori. He also wears the standard Demon Slayer uniform and is always accompanied by his white snake, Kaburamaru.

Mitsuri Kanroji has long pink hair with a neon green tip, styled in three thick braids with a few shorter clumps hanging down as bangs. She has fair skin, large round pale green eyes, and small moles under each eye. She wears a modified Demon Slayer uniform with a unbuttoned chest, a short skirt, and a white haori, along with green-striped socks and sandals.

Gyomei is blind, but his senses are incredibles.

Kyojuro Rengoku is dead.

This is a training, for the new Demon Slayers one day become the new pillars.

Each of the Hashira oversees a different component of the training program for lower-ranking Demon Slayers, which includes basic stamina training, flexibility training, rapid movement training, sword skill training, striking training, and muscle reinforcement training.

The training sessions are extremely strenuous; because of this, a majority of the Demon Slayers view the training session as an everlasting trip in hell, with a few notable exceptions who see the session as a chance to improve themselves. Each Hashira has 4 weeks of training with the trainees, the training occurs at each Hashira state.

Here's the schedule:

1st. Fitness and Stamina: by Uzui Tengen the Former Sound Hashira. His training is as a precursor to the latter programs and to assess physical fitness and stamina, trainees have to run multiple rounds at a high tempo on Tengen's guidance. In the break, his wives, Suma, Hinatsuru and Makio, would always make tons and tons of food, so the trainees could eat after a long and exhausting training session.

2nd. Rapid Movement Training: by Muichiro Tokito the Mist Hashira. His training is to ease and tense up muscles more smoothly for better body coordination, trainees practice doing swings and sparring with Muichiro.

3rd. Flexibility Training: by Mitsuri Kanroji the Love Hashira. Her training is to improve flexibility, trainees dance non-stop to the beat of music, and are later forcefully stretched by Mitsuri using her brute strength.

4th. Sword Skill Revision Training: by Iguro Obanai, the Serpent Hashira. His training is to rework swordsmanship, trainees spar against Obanai and must anticipate incoming attacks from his unorthodox, serpent-like fighting style.

5th. Infinite Striking Training: by Sanemi Shinazugawa, the Wind Hashira. His training is a beatdown session where Sanemi relentlessly attacks the trainees to build resilience, with no resting until participants either vomit or faint.

6th. Muscle Amplification Training: by Gyomei Himejima, the Stone Hashira. His training is to stabilize the body with a strong foundation for accurate attacks and indefatigable defense, trainees must be able to withstand the torrent from a mountain river's waterfall, be able to carry three heavy logs of wood on their shoulders, and lastly, push a large boulder for one chō, that equals to 358 feet.

As a general rule, Hashira must take part in each other's training sessions. It is considered a win-win situation for both the Hashira and the Demon Slayers, as even the Hashira get to improve due to constantly facing waves upon waves of junior swordsmen ranked lower than themselves. This accelerates their heart rate and raises their body temperature, which might help with unlocking the Demon Slayer Mark. Those who already have marks will train to continuously stay in the marked state.

Other than the sessions with the lower-ranked Demon Slayers, the Hashira also battle one on one using their own Breathing Styles with wooden swords. The purpose is to coordinate their attacks while using two different kind of breathing styles, so they won't interfere each other's attacks during a future battle that is moving at a high pace. As stated by Sanemi Shinazugawa, it also serves as combat training of higher stakes to improve their skills when sparring with the Demon Slayers does not provide a sufficient enough challenge to exert themselves.

Giyu Tomioka, the Water Hashira, initially did not take part in the training sessions for lower-ranked Hashira, but later joined the training after encouragement from Tanjiro. However, what exactly his training entailed is unknown.

Shinobu Kocho, the Insect Hashira, was the only Hashira who completely did not participate in any training sessions due to the significant amount of time she needed to prepare poison for the Final Battle. After the Hashira meeting, she informed Gyomei of this choice, who accepted this.

A few demon slayers that are part of the training:

Tanjiro Kamado is a determined and compassionate young man with dark, ruffled hair, distinctive burgundy tips, and warm brown eyes, often seen wearing a green and black checkered haori over his uniform and a scar on his forehead. His personality is marked by his strong sense of justice, kindness, and deep empathy for others, especially his sister, Nezuko. He is also known for his exceptional sense of smell, his unyielding resolve in battle, and his diligent, diligent nature. Tanjiro is a descendant of Sumiyoshi Kamado, who was taught the first Breathing Style, Sun Breathing (Hinokami Kagura), by its creator, Yoriichi Tsugikuni, who befriended his family. Sumiyoshi memorized the forms and passed them down through his family as a dance, which is why Tanjiro's family, the Kamados, inherited the technique, enabling him to use the Sun Breathing style.

Zenitsu Agatsuma is a Demon Slayer with a boyish appearance, characterized by short, uneven yellow-to-orange hair, a Demon Slayer Corps uniform with a unique triangle-patterned haori, and a fair complexion. His eyes transition from brown to gold. His personality is defined by extreme fear, anxiety, and self-doubt, but when terrified to the point of fainting, he unconsciously accesses his full potential as a skilled and precise swordsman, displaying great tactical intellect.

Inosuke is a young man of incredible athleticism and a beautiful, feminine face, which he keeps hidden beneath a boar's head mask he wears constantly. His personality is characterized by his pride, aggression, and belief in his own strength, leading him to be short-tempered and reckless. However, he also possesses a pure heart, fierce loyalty to his comrades, and a growing sense of responsibility despite his lack of common sense due to his mountain upbringing.

Kanao Tsuyuri is a young girl from Demon Slayer with a slender build, dark lilac eyes, thin black hair in a side ponytail, and a straight fringe with two shorter strands framing her face. She wears the standard Demon Slayer uniform with a purple gakuran jacket and skirt, and a short white haori. Initially, she had a cold, emotionless personality due to childhood trauma, but she develops empathy and a sense of self through her interactions with Tanjiro Kamado, becoming a skilled Flower Breathing user and a worthy successor to the Insect Hashira, Shinobu.

Tanjiro, Inosuke and Zenitsu are best friends.

Demon aka known as Oni information:

Oni are powerful, immortal demon creatures that were once human and subsist on human flesh and blood, but are vulnerable to sunlight and can be killed by beheading with Nichirin swords. They are led by the first demon, Muzan Kibutsuji, and are characterized by enhanced physical abilities, superhuman strength, and rapid regeneration. Most of them, if not all of them, lose their anterior memories and humanity. It is rare the demons that still remember their human lives.

Muzan Kibutsuji is the Demon King, the progenitor of all other demons in existence, and the leader of the Twelve Kizuki, an organization made up of the twelve strongest demons under his direct command.

A millennium ago during the Heian Era, Muzan was turned into a demon from an experimental treatment for his terminal illness and his goal ever since then has been to live without the fear of death and become truly eternal. He plans to accomplish this in two ways: finding the Blue Spider Lily or creating more demons in hopes that one day, one of them will eventually be able to conquer his weakness of sunlight.

Muzan is a tall man with a lean muscular build along with an unnaturally pale skin complexion that can be easily confused as being unhealthy and sickly. He has a straight, short-length, wavy black hair and sharp, almond-shaped eyes. His irises are red that fades to reddish-pink with black, vertical cat-like pupils along with visible cracks around the pupils. He also possesses sharp, blue nails that fades into light blue on his hands. Physically, he appears to be in his twenties.

As a human in the Heian Era, Muzan looked remarkably similar to his appearance as a demon, with the exception of his fangs and slit pupils. Interestingly, a model sheet revealed that his eyes were still a red color. Muzan wore a Sokutai outfit, with a black robe highlighted with gray patterns and a Kanmuri headwear. When grew increasingly sickly, Muzan then wore a plain white kimono, long hair, and had visible eye bags.

In his first appearance, Muzan was shown wearing a white fedora with a dark-mahogany ribbon and a somewhat extravagant outfit, consisting of an embroidered black tuxedo with brown buttons and a white tie over a black dress shirt and white dress pants. He also wore black loafers. However, due to his ever-changing disguises, Muzan is not limited to style of dress.

As seen in Rui's memories of meeting Muzan, the Demon King once sported a slightly different hairstyle and outfit in the past. 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, which he also wore when demoting Kyogai, albiet with his curled hair and fedora. From the Sengoku Era to when he met Hantengu, Muzan wore a black kimono with faint ornamental patterns. However, Muzan's hairstyle evolved throughout the centuries; his hair was short during the Sengoku Era when he met both Tsugikuni twins, grown significantly longer when transforming Hakuji and Doma, and finally covering his eyes when he encountered Hantengu.

The Twelve Kizuki are the twelve most powerful demons serving under Muzan Kibutsuji, divided into six Upper Ranks and six Lower Ranks, each serving as an elite group for his plans. Members receive a significant amount of Muzan's blood, enhancing their strength and granting them Blood Demon Arts. The Upper Ranks are stronger and more valued, while the Lower Ranks are weaker and more expendable, often being purged by Muzan when they are no longer useful. Hierarchy and Structure

Two Ranks: The Twelve Kizuki are split into the six Upper Ranks (Jōgen) and the six Lower Ranks (Kagen).

Muzan's Blood: All members have received a substantial portion of Muzan's blood, making them significantly more powerful than ordinary demons. Ranking: Members are ranked one through six, with one being the strongest and six the weakest within their respective groups.

Symbolism: Upper Rank members have their rank carved into both eyes, one with their number and the other with the kanji for "Upper Rank" (上弦). Lower Rank members have their rank on only one eye, with the kanji for "Lower Rank" (下弦).

Role and Function

Elite Force: They are the strongest demons serving directly under the Demon King, acting as his primary antagonistic force in the Demon Slayer series.

Blood Demon Arts: Members possess powerful and unique abilities derived from their shared blood, known as Blood Demon Arts.

Muzan's Control: Muzan has absolute control over the Twelve Kizuki and will replace or eliminate any member he deems weak or a hindrance to his goals.

The Great Purge: In the Taishō Era, Muzan decides to purge the entire Lower Ranks, replacing them with stronger demons to serve his ultimate goal.

While the exact relationships between the two groups are unclear, it is known that the Upper Ranks despise the Lower Ranks. The Upper Ranks each possess a level of power that far surpasses that of the Lower Ranks; as proof of their strength, the strongest of the Demon Slayer Corps, the Hashira, have killed numerous Lower Ranks over the years, while the Upper Ranks have killed and eaten many Hashira over the years. Kagaya Ubuyashiki states that it had been over a hundred years since an Upper Rank has been killed following the defeat of Gyutaro and Daki. Furthermore, it has been remarked by Shinobu Kocho that the strength of an Upper Rank demon is, at least, comparable to three Hashira, although it should be noted that the capabilities of a Hashira vary from one to another, especially the ones who can manifest their Demon Slayer Marks to further augment their strength. While the Lower Ranks have been replaced countless times, the Upper Ranks have not changed over the past 100 years at all.

When a member of the group is removed from the Twelve Kizuki, Muzan demotes these members by slashing the pupils where the number signifying their rank is located, creating an "X" shaped scar over the digit, signifying that they are no longer part of the Twelve Kizuki. The only example of this happening is Kyogai, who had already reached his "limit" and could no longer consume human flesh. This gradually led to Kyogai losing his appetite for humans and beginning to lose the ability to evolve and become stronger. Therefore, he was deemed too weak to remain in his position of Lower Rank Six and subsequently removed.

After their most recent failure with the death of Rui, holder of Lower Rank Five, Muzan decided to dismantle the Lower Ranks completely. He ordered Nakime to summon each member to the Infinity Castle and proceeded to kill all of the Lower Ranks, sparing only Enmu, Lower Rank One, and giving him a chance to redeem himself by killing a Hashira and bringing him the head of Tanjiro Kamado. With Enmu's death at the hands of Tanjiro, the Lower Ranks are functionally disbanded with all of their members dead, and with Nakime's death at the hands of Muzan himself, the same also applies to the Upper Ranks.

Mission

The Twelve Kizuki have been given three tasks to complete by Muzan's command:

To find the Blue Spider Lily (the key ingredient of the experimental medicine that made Muzan a demon), but since Muzan's discovery (via Hantengu) that Nezuko Kamado is immune to the sun, he has decided that the Upper Ranks' first focus is to capture her and bring her to him.

The destruction of the Demon Slayer Corps. As part of their mission to destroy the corps, Muzan gave the Twelve Kizuki specific orders to hunt down and eliminate the Ubuyashiki Family, as they are the corps' leaders and backers, and are ultimately what keeps the Corps alive and enables them to rebuild the organization again and again no matter how many times Muzan and the Twelve Kizuki try to destroy it.

After centuries of failing at these two tasks, Muzan has decided that the Twelve Kizuki should serve him with suicidal devotion to ensure success.

Blood Battle

According to Kokushibo, if there is any dissatisfaction between the members of the Upper Rank demons, the lower-ranked demon must invoke the right to kill or defeat their desired target in order to raise their position in the hierarchy. Any that defies the rules will face retribution, as seen when Kokushibo sliced off Akaza's arm as a warning for attacking Doma and disregarding the hierarchical order.

Privileges

As the Twelve Kizuki are deemed by Muzan to be the twelve most powerful demons (second only to himself), he is known to constantly show them favoritism and give them special privileges normally not given to average demons. One of these privileges is that he would empower all members of the group with large amounts of his blood in order to increase their power and strength in acknowledgement of their achievements and further strengthen them in order to be of further use in his plans.

Moreover, Upper Rank demons have the authority to transform humans they view as worthy into demons by giving them blood, and upon receiving permission from Muzan, their blood will transform into his. This was seen with Doma when he turned Gyutaro and Daki into demons by giving him his blood and with Kokushibo when he turned Kaigaku into a demon by giving him his blood.

As seen from the case with Rui, Muzan gave him special permission to form a large group of demons - despite his own law of forbidding them to team up together in large numbers - in order to satisfy his longing for a family. This shows that despite his paranoia of other demons working together in overthrow him, his favoritism for Rui exempted him from this law and allowed his "family" to exist.

With Gyutaro and Daki, Muzan gave them the special privilege of sharing the position of Upper Rank Six. His favoritism for Gyutaro was the primary reason for this and caused him to brush aside the fact that he saw their emotional attachment to each other as weakness and did not truly acknowledge Daki as a Upper Rank.

With Akaza, Muzan gave him special permission not to eat women. Akaza was noted by Doma to have an unusual aversion to eating or even hurting women despite the immense power he could gain by devouring them due to their stronger nutritional value to a demon's development. Despite his orders for the Twelve Kizuki to continuously strive for more power by eating humans in mass to be of better use to his plans, Muzan actually gave Akaza special permission to not eat women and indulged his unusual quirk due to considering him to be one of his favorite Upper Ranks. Akaza was also favored by Muzan to the point that he was only deployed for special assignments and nothing else, a right not even given to the two demons who ranked above him.

Uppermoons

Kokushibo - Uppermoon 1 Douma - Uppermoon 2 Akaza - Uppermoon 3 Nakime - Uppermoon 4 Hantengu - Former Uppermoon 4; dead Gyokko - Uppermoon 5; dead Kaigaku - Uppermoon 6 Gyutaro and Daki - Former Uppermoons 6; dead

Kokushibo is a tall man with a muscular build and a pale complexion. He possesses long, spiky black hair with red tips, that he keeps in a ponytail. His most notable feature is the three sets of eyes on his face with yellow irises and red flesh sclera that have black straight lines diverging from each iris. His middle set of eyes has the kanji of "Upper Rank (上じょう弦げん, Jōgen?)" on engraved on his left eye, and daiji for "One (壱いち, Ichi?)" on his right, while his other sets of eyes feature black pupils and a cracked pattern in the irises. His top set of eyes replaced his eyebrows. Kokushibo also has red markings resembling flames on the top left side of his forehead and the bottom right of his chin. His appearance is described as profoundly majestic and dignified by Muichiro Tokito.

Kokushibo wears a purple-and-black hexagonal-patterned nagagi kimono and black umanori-styled hakama pants tied with a white uwa-obi, with pair of zōri with purple straps and white tabi socks. He carries a fleshy katana at his waist that, has eyes in the space between the tsuka ito wrapping of the handle of his sword. The tsuba and blade are shown to have eyes and veins. The scabbard is also fleshy in appearance.

Douma is a tall young man with a lean, muscular build. He is of extremely pale complexion and possesses long, pointed nails that appeared to be stained with a pale purple. He possesses long platinum blond hair that he wore parted to his right, the shorter parts around his face seeming to flare out to either side around his head, curving backwards with one lock slanting down to the right of his face to fall between his eyes, while the longer parts were left to drape centrally down his back in a thinning spiral. Due to his beauty, he was seen as a divine being, and as such, he was made into a cult figure.

His eyes have been described to be incredibly rare and beautiful, as, in color, they appeared to be made up of an array of rainbow pastel tones that fade into one another as they circle his irises, this unusual appearance even causing people to believe Douma is a blessed being who could communicate with the gods. The kanji for Upper Rank (上じょう弦げん, Jōgen?) is etched across his left eye, and the daiji for Two (弐に, Ni?) or Six (陸ろく, Roku?) at the time when he first met Gyutaro and Daki on his right, with thick eyelashes and a set of notably thick black eyebrows acting to frame them above.

Douma wore a blood-red turtleneck of a design that made it appear that the section between his neck and upper chest is covered by a black substance that looks like it is dripping slightly down his body, with this same design being repeated at his wrists and down his hands, as well as on the small, circular red and black "stain" that adorned the top of his head. Below this, he wore a pair of straight, tan-colored hakama pants of a pinstriped design, their cuffs visibly loose, which he secured with a pale green-tinged golden belt, its buckle a bright silver. He also only wears plain black tabi socks on his feet.

Akaza was a very muscular young man of average height with skin so fair it appeared bright green-tinged white, decorated by a pattern of thick blue lines, which resembled the criminal tattoos he had as a human. Akaza had short, bright pink hair that fluffed out around his head and inward-tilting yellow eyes with pink eyelashes and blue sclera that somewhat resembled cracked glass. The kanji for Upper Rank (上じょう弦げん, Jōgen?) was etched into his right iris, and the daiji for Three (参さん, San?) was etched into his left.

The lines on his face curved through each of his eyes from below his ears to over his temples, another blue line running from the center of his hairline to the bridge of his nose, with two more lines running around his neck, three others branching off the lower one to his torso. The middle line ran directly down his chest to halfway down his stomach, and the other two branched off to the sides over each side of his chest to join the two other lines. This same three-line pattern also repeated around his waist. On his arms, lines were running down the front of his shoulders that ran into two more, which went around his biceps before continuing to run down to his wrists, below which each of his fingers was also dark blue with an orange fingernail. His toes and toenails also sharing this unusual appearance as his fingers and fingernails.

Akaza wore little and only sported a short, sleeveless dark purple-pink haori cut off at his waist, left open to expose his chest, and decorated by a square pattern on his back. Below this, he sported a pair of baggy white pants that he rolled to just below the knee with a turquoise rope belt to secure them at his waist, with bright pink tassel ornaments hanging on the front and the back of the rope belt. Akaza preferred to go barefoot but wore a pair of chains of large, round, pink pearls around his ankles.

Nakime is a pale woman with a grayish complexion, who has sharp, blue-stained nails and notably dark pink lips which sharply contrasted the tone of her skin. She has glossy, hip-length hair of a black color, which she wore falling down her back in slight waves that cut off sharply at the ends, with two chin-length strands left to frame her face and long bangs that obscured her large eye set in between them, swept to either side of her nose.

Nakime dons a plain-loose black kimono with a white loose yuban underneath, secured with a striped pale brown-striped obi, white socks and no shoes or clogs. She was always seen holding a four-stringed wooden biwa with a large bachi pick.

Since becoming an Upper Rank, Nakime took to wearing her bangs as to not obscure her face, showing that she possessed a single large, pink-colored eye with the daiji for "Four" (肆し, Shi?) engraved into its iris. The upper portion of her face was also revealed, and appeared to be a darker gray color than the rest of her pale skin with prominent veins surrounding her one eye. In addition, her hair would grow extensively and resembles roots on a nearby wall.

As a human, Kaigaku is a muscular young man of average height and pale skin tone who has short, spiky black hair, with two thick strands framing his face, and a pair of dull, cold teal eyes framed by thick, arched eyebrows. His facial expressions are often unfriendly, and he has a semi-permanent snarl.

After becoming a demon, he gains many demonic traits, including four navy blue flame-like markings on both sides of his cheeks, emerald green irises (originally colored cyan in the manga) with black sclera, elongated canines resembling fangs, sickly pale skin, sharp blackened nails, and pointed ears. By becoming a member of the Twelve Kizuki and rising to the position of Upper Rank Six, his eyes are etched with the kanji of "Upper Rank" (上じょう弦げん, Jōgen?) on his right, and daiji of "Six" (陸ろく, Roku?) on his left.

When he was still human, who is still undergoing training under Jigoro Kuwajima, he is shown to be wearing a black kimono with a white collar, worn loosely to expose his chest and his signature magatama-necklaces around his neck, with the magatama being in gold and the string in blue. When he became a Demon Slayer, Kaigaku wore the Corps’ standard uniform consisting of a navy gakuran-style button-up jacket, with a stand-up collar and long sleeves, featuring silver buttons and a shirt pocket on the left breast, with the kanji for Destroy (滅めつ, Metsu?) engraved on the back of the uniform. Beneath the jacket, he wore a white long-sleeved collared undershirt. His uniform also included a pair of matching navy tattsuke-hakama held up by a white belt, tucked into white kyahan wrapped around his ankles. On his feet, he wore navy tabi socks and a pair of zori sandals with blue straps.

When he became a demon, he is shown to be wearing his signature kimono secured with a blue obi over a stylized version of his Demon Slayer uniform that has yellow flame-like markings near the chest area and has it's collar unbuttoned. His forearms are seemingly wrapped in white kyahan-like material. He also wears multiple necklaces on his neck and wrist with light-turquoise colored strings that hold together blue magatama-like pendants that were yellow in color when he was human.