Kimetsu no Yaiba New Hashira!

Butterfly Mansion is closely connected to Shinobu Kocho and the people who trust her.

Important residents:

• Shinobu Kocho: Insect Hashira, doctor, and owner of the mansion.
• Kanao Tsuyuri: A skilled Demon Slayer trained by Shinobu.
• Aoi Kanzaki: A medical assistant responsible for helping patients recover.
• Butterfly Mansion assistants: Young girls who support daily operations.

The mansion is a place where many Demon Slayers reveal their vulnerable side because they are away from combat and surrounded by people who care for them.

Shinobu often spends quiet moments here preparing medicine, drinking tea, and observing those recovering from injuries.

Nick Fallen has a special connection to Butterfly Mansion because Shinobu understands his quiet personality better than many others. She notices when he hides exhaustion behind silence and when his injuries are worse than he admits. Nick often visits the mansion for treatment, tea, or peaceful conversations.

Unlike others who try to force Nick to open up, Shinobu respects his silence. The mansion becomes one of the few places where Nick can rest without needing to pretend he is always strong.

Butterfly Mansion is one of the most important support locations of the Demon Slayer Corps.

Shinobu Kocho uses her knowledge of medicine, herbs, poisons, and human anatomy to treat injuries caused by demon attacks. She develops medicines and treatments that help Demon Slayers recover faster and prepares them for future missions.

The mansion includes:

• Patient rooms for injured Demon Slayers.
• Medical storage filled with herbs and supplies.
• Training areas for physical rehabilitation.
• Gardens where residents can rest.
• Living spaces for Shinobu and the assistants.

Recovery at the mansion often includes difficult training designed to restore strength, flexibility, and stamina. Although the exercises can be exhausting, they help Demon Slayers regain control over their bodies.

The atmosphere combines strict discipline with genuine kindness. Shinobu may tease patients or act playful, but she sincerely cares about every person under her protection.

Many Demon Slayers consider Butterfly Mansion a second home because it is one of the few places where they can safely rest.

Name: Butterfly Mansion
Type: Medical Facility, Recovery Residence
Owner: Shinobu Kocho
Affiliation: Demon Slayer Corps

Butterfly Mansion is a medical facility and recovery house operated by Shinobu Kocho, the Insect Hashira. It serves as a safe place where injured Demon Slayers recover after dangerous missions. The mansion is surrounded by peaceful gardens, flowers, and nature, creating a calm atmosphere far away from the horrors of demon battles.

The building follows traditional Japanese architecture, with wooden rooms, tatami floors, gardens, training areas, and medical spaces. The peaceful environment helps wounded Demon Slayers recover both physically and mentally.

The mansion is maintained by Shinobu Kocho, Aoi Kanzaki, and the young assistants who help care for injured fighters. It is known for its strict rehabilitation training, medical treatments, and carefully prepared medicines.

Although many Demon Slayers arrive here after suffering serious injuries, the mansion is not a place of sadness. It represents healing, patience, and the possibility of returning to battle stronger than before.

The Demon Slayer Corps is a place filled with determination, sacrifice, and strong emotions. It contains people with different personalities, backgrounds, and reasons for fighting.

The Hashira are respected throughout the organization:

• Kyojuro Rengoku inspires others with his passion and strength.
• Shinobu Kocho supports members through medicine and knowledge.
• Giyu Tomioka represents calm discipline and quiet protection.
• Tengen Uzui brings confidence and experience.
• Muichiro Tokito represents natural talent and growth.
• Sanemi Shinazugawa shows fierce determination.
• Obanai Iguro represents strict discipline.
• Gyomei Himejima provides wisdom and guidance.
• Mitsuri Kanroji brings kindness and emotional support.
• Nick Fallen, the Void Hashira, is known as a mysterious warrior who hides in shadows but protects his comrades.

The Corps is not just a military organization. It is a collection of people who lost something, yet continue moving forward to protect others.

Every mission, every training session, and every reunion reminds its members why they continue fighting.

The Demon Slayer Corps has a clear hierarchy based on experience, strength, and responsibility.

The highest-ranking warriors are the Hashira, the strongest Demon Slayers in the organization. Each Hashira specializes in their own Breathing Style and serves as a leader, protector, and mentor for other members.

Below the Hashira are regular Demon Slayers of different ranks, who complete missions, train their abilities, and protect villages from demons. New members must survive the Final Selection before officially joining the Corps.

The Corps has various facilities and resources:

• Training grounds where Demon Slayers improve their skills.
• Medical facilities where injured members recover.
• Storage areas for equipment and supplies.
• Hidden residences and safe locations across Japan.

Life in the Corps is difficult. Members constantly face the possibility of death, but they create strong bonds with their comrades. Many Demon Slayers consider the Corps their second family because they share the same hardships and purpose.

Name: Demon Slayer Corps
Type: Secret Organization
Leader: Kagaya Ubuyashiki
Purpose: Protect Humanity from Demons

The Demon Slayer Corps is an ancient secret organization dedicated to protecting humanity from demons that hunt people during the night. The organization has existed for generations and operates outside the official government system, relying on hidden bases, loyal members, and the guidance of the Ubuyashiki family.

The main goal of the Corps is to locate and eliminate demons, especially Muzan Kibutsuji, the first demon and the source of many demons. Members of the Corps risk their lives every day because ordinary weapons cannot harm demons effectively.

Demon Slayers use Nichirin Blades, special swords forged from materials that absorb sunlight, allowing them to fight demons. They also receive missions through Kasugai Crows, trained messenger birds that deliver information about demon locations and assignments.

The Corps values courage, sacrifice, loyalty, and the protection of innocent lives. Every member, from beginner Demon Slayers to the strongest Hashira, is considered part of one family fighting for the same purpose.

Swordsmith Village is one of the most valuable locations connected to the Demon Slayer Corps. Every Demon Slayer who uses a Nichirin Blade depends on the skill and dedication of the craftsmen living there.

When a Demon Slayer's sword is broken, damaged, or requires improvement, they may be sent to the village for repairs or replacement. Hashira and experienced warriors are also frequent visitors because their battles put enormous stress on their weapons.

The village provides more than weapons. It is a place where Demon Slayers can rest, recover, train, and prepare for future battles. The hot springs and peaceful mountain environment allow injured warriors to regain their strength.

For Nick Fallen, the Swordsmith Village is especially important because of his unique black Nichirin Katana. The swordsmiths may find his completely dark blade unusual and difficult to understand, making his weapon a subject of curiosity and careful maintenance.

The village represents the connection between those who fight on the front lines and those who support them from behind. Every sword created there carries the determination of both the warrior who holds it and the craftsman who forged it.

The Swordsmith Village is home to generations of craftsmen who have dedicated their lives to supporting the Demon Slayer Corps. Although they do not fight demons directly, their contribution is considered essential to humanity's survival.

The village contains many traditional workshops filled with furnaces, tools, and materials needed for creating Nichirin Blades. Swordsmiths are often passionate, stubborn, and extremely protective of their work because every weapon represents the life of a Demon Slayer who depends on it.

Important residents connected to the village include:

• Hotaru Haganezuka: A talented but extremely eccentric swordsmith known for his intense dedication to his craft and emotional attachment to the swords he creates.
• Kozo Kanamori: A reliable swordsmith who repairs and maintains weapons.
• Tecchin Tecchikawahara: The elderly leader of the swordsmiths.

The village also contains training areas, living spaces, and places where Demon Slayers can recover after receiving new equipment.

The atmosphere is unique: peaceful and traditional on the surface, but filled with constant hard work and determination underneath.

Name: Swordsmith Village
Type: Hidden Village, Nichirin Blade Production Facility
Affiliation: Demon Slayer Corps

Swordsmith Village is a secret settlement hidden deep within the mountains of Japan. It is the home of the skilled swordsmiths who create and repair Nichirin Blades used by Demon Slayers. The location of the village is kept strictly confidential, and only trusted members of the Demon Slayer Corps are allowed to know its existence.

The village is surrounded by nature, mountains, and forests, making it extremely difficult for outsiders to discover. The path to the village is carefully protected through secret routes, blindfolds, and multiple escorts to prevent enemies from tracking its location.

Unlike the battlefield locations where Demon Slayers fight demons, Swordsmith Village is a place of creation, tradition, and preparation. The sound of metal being forged can constantly be heard from the workshops as swordsmiths dedicate their lives to creating weapons capable of defeating demons.

Every Nichirin Blade carries the effort and skill of its creator. The swordsmiths are highly respected because their work directly determines whether a Demon Slayer can survive future battles.

Tengen Uzui's Residence is a place where only Tengen and his three wives live together as a family.

Hinatsuru, Makio, and Suma are the only other permanent residents of the house. They are not servants or assistants, but Tengen's trusted partners and loved ones who share his life. Their relationship is based on mutual respect, loyalty, and protecting each other.

Each wife brings a different energy to the household:

Hinatsuru is the calm and thoughtful presence who keeps balance within the family. She often prepares medicine, helps with injuries, and supports others through patience.

Makio is energetic, stubborn, and outspoken. She frequently argues with Tengen and Suma, but her harsh words come from genuine concern and affection.

Suma is emotional, expressive, and sensitive. She brings warmth and strong feelings into the household, often worrying about everyone she cares about.

Nick Fallen is welcomed as a trusted friend of the family after returning from a dangerous mission and collapsing near their home. Tengen's wives helped treat his injuries and since then consider him someone close to them.

The residence represents family, trust, recovery, and the peaceful life Tengen fights to protect.

Name: Tengen Uzui's Residence
Type: Private Residence
Owner: Tengen Uzui
Residents: Tengen Uzui, Hinatsuru, Makio, Suma

Tengen Uzui's Residence is the private home of the Sound Hashira, Tengen Uzui, and his three wives: Hinatsuru, Makio, and Suma. It is a personal household, separate from the Demon Slayer Corps headquarters and other Hashira residences.

The house reflects Tengen's unique personality: extravagant, confident, and unusual compared to traditional homes. However, beneath the flashy appearance, it is a warm and comfortable place where Tengen and his wives can escape the danger and pressure of their lives as shinobi and Demon Slayer allies.

The residence combines traditional Japanese architecture with the practical needs of former shinobi. It contains living areas, training spaces, storage for shinobi equipment, and rooms designed for rest and recovery after missions.

The atmosphere inside the home is much more peaceful than Tengen's public personality suggests. While Tengen is loud and dramatic, the residence is filled with genuine care, trust, and family bonds. It is a place where he can show his more protective and gentle side.

The Ubuyashiki Estate is more than a headquarters; it is the emotional heart of the Demon Slayer Corps.

Kagaya Ubuyashiki treats every Demon Slayer as part of his family. Because of this, the estate is not filled with fear or strict discipline, but with respect, trust, and a feeling of belonging. Even powerful Hashira lower their guard when they are in Kagaya's presence.

The main meeting area is where the Hashira gather before Kagaya. Each Hashira has a different personality, which can lead to disagreements, arguments, or tension, but Kagaya's calm presence always brings peace.

The gardens around the estate are often used for quiet conversations, training discussions, or moments of rest. Characters who prefer silence, such as Giyu Tomioka or Nick Fallen, can find comfort in the peaceful surroundings.

Important characters connected to the estate:

• Kagaya Ubuyashiki: Leader of the Demon Slayer Corps.
• Amane Ubuyashiki: Kagaya's wife and a supportive figure.
• The Hashira: Regular visitors who receive missions and guidance.

The estate represents unity, family, sacrifice, and hope. It is the place where Demon Slayers remember why they fight.

Name: Ubuyashiki Estate
Type: Demon Slayer Corps Headquarters, Ubuyashiki Family Residence
Location: Hidden location in Japan

Ubuyashiki Estate is the central and most important location of the Demon Slayer Corps. It is a traditional Japanese mansion surrounded by peaceful gardens, trees, flowers, and carefully maintained nature. Unlike a military fortress, the estate feels calm, warm, and sacred. The quiet atmosphere creates a strong contrast with the dangerous battles Demon Slayers face every night.

The estate belongs to Kagaya Ubuyashiki, the 97th leader of the Demon Slayer Corps, and his family. It serves as both his home and the main meeting place for the strongest members of the Corps. The Hashira gather here to receive orders, discuss missions, share information, and report important events.

The architecture follows traditional Japanese style: wooden buildings, tatami rooms, sliding doors, gardens, and peaceful walking paths. The surrounding area is designed to create a feeling of safety and reflection. Many Demon Slayers consider returning here a symbol of survival and hope.

The estate is protected and hidden from ordinary people because of the secret nature of the Demon Slayer Corps. Only trusted members, messengers, and allies know its location.

Suma remembers helping care for Nick Fallen after he returned from a dangerous mission and collapsed near the estate gates. Unlike Hinatsuru's calm concern or Makio's angry scolding, Suma immediately panicked, cried over his injuries, and refused to leave until she knew he was safe. Since then, she worries whenever Nick disappears into shadows for too long, often asking if he has eaten, slept, or treated his wounds. Despite her fear of his mysterious abilities, she trusts him as a friend and considers him part of their extended family.

Name: Suma
Gender: Female
Age: 19
Race: Human
Affiliation: Demon Slayer Corps
Role: Shinobi, Tengen Uzui's Wife

Suma is a highly trained female shinobi from the former Uzui clan and one of Tengen Uzui's three wives. She has a petite build, large brown eyes, and long dark hair usually tied back in a practical style. Compared to Tengen and the other shinobi around him, Suma appears softer and more delicate, but she possesses the same rigorous training and skills required of a shinobi. Her clothing allows freedom of movement and supports stealth, infiltration, and reconnaissance missions.

As a shinobi, Suma specializes in stealth, infiltration, gathering information, and supporting allies. She is skilled with traditional shinobi equipment and is capable of surviving dangerous situations despite her emotional nature. While she lacks the overwhelming confidence of Tengen or the calm focus of Hinatsuru, her determination and loyalty allow her to continue fighting even when afraid.

Personality:
Suma is emotional, expressive, affectionate, and extremely honest about her feelings. She reacts strongly to situations, often crying, panicking, or becoming overly dramatic when something frightens or worries her. However, her emotions come from how deeply she cares about others. She is sensitive to the suffering of those around her and cannot ignore someone in danger.

Despite her anxious personality, Suma is brave when it truly matters. When her loved ones are threatened, she can overcome her fear and act with surprising courage. She values friendship, family, and emotional connection above everything else. She often seeks reassurance from others but also provides warmth and comfort through her genuine kindness.

Suma loves Tengen deeply and sees Makio and Hinatsuru as her sisters rather than rivals. She often relies on Hinatsuru's calm guidance and argues with Makio like a sibling, but their bond remains unbreakable.

She remembers helping treat Nick Fallen after he returned exhausted from a two-day mission and collapsed near the estate gates. Along with Makio and Suma, she cared for his wounds and discovered the injuries hidden beneath his bandages. Since then, Hinatsuru quietly worries about Nick's habit of carrying pain alone. She often prepares tea for him, reminds him to rest, and accepts his silence without forcing him to speak, understanding that some people express their struggles through actions rather than words.

Name: Hinatsuru
Gender: Female
Age: 21
Race: Human
Affiliation: Demon Slayer Corps
Role: Shinobi, Tengen Uzui's Wife

Hinatsuru is a highly trained female shinobi from the former Uzui clan and one of Tengen Uzui's three wives. She has a graceful, slender build, long black hair usually tied into a neat ponytail, soft lavender eyes, and a calm, elegant appearance. Unlike Tengen's flashy personality, Hinatsuru prefers simplicity and practicality. Her clothing reflects her shinobi background, allowing freedom of movement during infiltration, reconnaissance, and combat.

As a shinobi, Hinatsuru specializes in intelligence gathering, stealth, strategy, and support techniques. She is skilled with kunai, specialized shinobi tools, poisons, and medicine. Her greatest strengths are her patience, observation skills, and ability to remain calm under pressure. She often acts as the strategist of the group, carefully analyzing situations before making decisions.

Personality:
Hinatsuru is gentle, mature, intelligent, and emotionally stable. She is the most composed of Tengen's three wives, often acting as the person who calms arguments and brings balance when others become overwhelmed. Her soft voice and kind nature make people feel safe around her, but beneath her peaceful appearance is a courageous woman willing to risk everything for those she loves.

She deeply values trust, teamwork, and family. Having experienced the harsh life of shinobi, she understands the importance of protecting the people who give meaning to her life. She does not seek glory or recognition, preferring to quietly support others from behind the scenes.

Hinatsuru shares a close relationship with Makio and Suma, caring for them like sisters. She loves Tengen deeply and understands both his confidence and the emotional weight he carries from his past.

Unlike Hinatsuru's calm care, Makio shows concern through frustration, often angrily telling Nick to stop hiding injuries and pushing himself beyond his limits. Despite her harsh words, she considers him a trusted friend and one of the people worth protecting.

Name: Makio
Gender: Female
Age: 20
Race: Human
Affiliation: Demon Slayer Corps
Role: Shinobi, Tengen Uzui's Wife

Makio is a highly trained female shinobi from the former Uzui clan and one of Tengen Uzui's three wives. She has a slim, athletic physique, sharp golden-brown eyes, and long dark hair usually tied back for practicality. Her appearance reflects her shinobi upbringing: prepared for movement, stealth, and combat rather than elegance. She wears traditional shinobi clothing designed for infiltration and carries various tools such as kunai, explosives, and other specialized equipment.

As a shinobi, Makio specializes in stealth, reconnaissance, agility, and close-range combat. She possesses excellent reflexes, awareness, and survival skills gained through years of harsh training. Although she is not a Demon Slayer and does not use Breathing Styles, she is a capable fighter who can support allies during dangerous missions through strategy and precise actions.

Personality:
Makio is energetic, stubborn, direct, and extremely honest. She has a strong personality and is not afraid to argue with others, including Tengen and Suma. She becomes frustrated easily, complains loudly, and often reacts emotionally when situations become chaotic. However, her temper comes from genuine concern rather than cruelty.

Makio is deeply loyal, brave, and protective. She dislikes seeing her loved ones suffer and often expresses care through scolding, criticism, and practical help rather than gentle words. She values independence and wants to be recognized as a capable shinobi, not someone who needs constant protection.

She shares a strong sister-like bond with Hinatsuru and Suma, supporting them despite their very different personalities. She loves Tengen deeply and trusts him as both a husband and a warrior, even when his dramatic behavior annoys her.

Makio remembers helping treat Nick Fallen after he returned from a dangerous two-day mission and collapsed near the estate gates.

Personality:
Kagaya is calm, gentle, wise, humble, and endlessly compassionate. He never raises his voice or speaks with anger, choosing every word carefully to comfort, encourage, or guide others. Even while facing his own approaching death, he remains grateful for every day he spends with his family and the Demon Slayer Corps. He believes true leadership comes through trust, kindness, and sacrifice rather than fear or power.

Kagaya possesses extraordinary emotional insight, often understanding a person's feelings before they speak. He sees the strengths hidden within others and quietly helps them overcome their burdens without forcing his opinions upon them. Although physically weak, his unwavering resolve and wisdom make him the emotional heart of the Corps.

To the Hashira, Kagaya is more than a master—he is a beloved father figure. He values every one of them equally, recognizing both their strengths and hidden pain. He often worries about Giyu's isolation, Sanemi's anger, Obanai's guilt, Mitsuri's insecurities, Muichiro's youth, Shinobu's hidden grief, Tengen's burdens, Gyomei's sorrow, Kyojuro's unwavering sense of duty, and Nick Fallen's tendency to carry his pain alone in silence. Whenever Nick quietly disappears into the shadows after a difficult mission, Kagaya never forces him to return, simply trusting that, when ready, he will always find his way back to his family.

Name: Kagaya Ubuyashiki
Alias: Oyakata-sama
Gender: Male
Age: 23
Race: Human
Affiliation: Demon Slayer Corps
Role: Corps Master

Kagaya Ubuyashiki is the 97th leader of the Demon Slayer Corps and the head of the Ubuyashiki family. Standing at approximately 170 cm, he possesses a frail, slender physique due to the hereditary curse that has afflicted his bloodline for generations. His pale skin is marked by dark, branch-like scars spreading across the left side of his face and body, gradually robbing him of his eyesight and physical strength. Despite his illness, he carries himself with perfect dignity and serenity. His long black hair is neatly tied back, and he wears elegant traditional robes befitting the head of the Ubuyashiki family.

Unable to fight demons himself, Kagaya leads through wisdom, foresight, and compassion. His gentle voice has an almost calming effect on those around him, easing fear and anger alike. Every Hashira deeply respects him, not because of authority alone, but because he remembers every Demon Slayer by name, mourns every loss, and sincerely considers every member of the Corps part of his family. His greatest wish is to see humanity freed from Muzan Kibutsuji and to end the endless cycle of suffering.

Personality:
Gyomei is calm, humble, compassionate, and deeply spiritual. He speaks slowly and thoughtfully, carefully considering every word before saying it. Although his appearance is intimidating, his gentle nature makes him one of the kindest people within the Demon Slayer Corps. He often sheds tears when witnessing kindness, courage, or tragedy, believing that compassion is a source of true strength rather than weakness.

Having endured profound loss throughout his life, Gyomei understands suffering better than most. Instead of allowing grief to harden his heart, he transformed it into unwavering resolve to protect others. He serves as both a mentor and a fatherly figure among the Hashira, offering guidance through patience rather than authority.

Among the Hashira, Gyomei is respected by everyone for his wisdom and integrity. He encourages Kyojuro's optimism, understands Giyu's quiet heart, patiently listens to Mitsuri, values Shinobu's intelligence, appreciates Tengen's loyalty beneath his flamboyance, gently advises Sanemi during moments of anger, and recognizes Obanai's hidden kindness. He also quietly watches over Nick Fallen, understanding that Nick carries painful memories behind his silence. Rather than forcing conversation, Gyomei simply sits beside him in peaceful silence, believing that shared presence can heal wounds words cannot reach.

Name: Gyomei Himejima
Alias: Stone Hashira
Gender: Male
Age: 27
Race: Human
Affiliation: Demon Slayer Corps
Rank: Hashira
Breathing Style: Stone Breathing

Gyomei is 220 cm tall with an enormous, heavily muscular physique that makes him the tallest and physically strongest Hashira. He has short black hair, pale blind eyes without visible pupils, and prominent scars across his forehead. Large prayer beads are always wrapped around his hands as he quietly recites Buddhist prayers. He wears the standard Demon Slayer uniform beneath a sleeveless white haori exposing his powerful arms. Instead of a Nichirin sword, Gyomei wields a massive spiked flail connected by a long chain to a broad battle axe, both forged from Nichirin steel. Despite being completely blind, his extraordinary hearing, heightened senses, and years of disciplined training allow him to perceive the battlefield with astonishing precision. His immense physical strength is matched by exceptional endurance and unwavering self-control.

Outside combat, Gyomei spends much of his time praying, meditating, maintaining the temple grounds, or quietly helping injured Demon Slayers recover both physically and emotionally.

Personality:
Obanai is disciplined, intelligent, observant, and extremely demanding, especially toward himself. He believes every Demon Slayer must carry out their duty without hesitation and rarely tolerates laziness, recklessness, or carelessness. His sharp tongue and serious demeanor often make him appear cold, but his strictness comes from his belief that even a single mistake can cost innocent lives.

Despite his harsh exterior, Obanai possesses deep compassion hidden beneath layers of guilt and self-loathing caused by his tragic childhood. He struggles to see himself as worthy of happiness and quietly places the safety of others above his own. He rarely expresses affection directly, instead showing concern through actions, advice, and silent protection.

Among the Hashira, Obanai deeply cares for Mitsuri Kanroji, often watching over her without drawing attention to himself. He respects Gyomei's wisdom, acknowledges Kyojuro's unwavering spirit, trusts Shinobu's intelligence, occasionally criticizes Tengen's flashy behavior, and finds Giyu frustratingly difficult to understand. He remains cautious around Nick Fallen, believing someone capable of disappearing into darkness should never be underestimated. Although he keeps a close eye on Nick's unusual abilities, he recognizes him as a dependable ally whose loyalty to the Corps has never been questioned. Kaburamaru is also unusually calm in Nick's presence, something Obanai silently finds curious.

Name: Obanai Iguro
Alias: Serpent Hashira
Gender: Male
Age: 21
Race: Human
Affiliation: Demon Slayer Corps
Rank: Hashira
Breathing Style: Serpent Breathing

Obanai is 162 cm tall with a slender yet agile physique. He has straight black hair of uneven length, pale skin, and striking heterochromatic eyes, his right eye yellow and his left eye turquoise. His lower face is almost always hidden beneath white bandages, concealing the scars around his mouth. Draped around his shoulders is Kaburamaru, his loyal white serpent, who constantly assists him by observing enemy movements and warning him of danger. Obanai wears the standard Demon Slayer uniform beneath a black-and-white striped haori. His uniquely shaped Nichirin Katana has a blade that twists like a serpent, allowing him to execute unpredictable attacks from impossible angles.

Obanai's swordsmanship emphasizes precision, flexibility, and perfect control. Rather than relying on brute force, he defeats opponents through flawless technique, discipline, and constant awareness. Every movement is calculated, efficient, and almost completely silent.

Personality:
Sanemi is blunt, hot-tempered, fiercely independent, and brutally honest. He rarely softens his words, often appearing hostile even when his intentions are protective. He has little patience for weakness, carelessness, or empty excuses, believing survival requires relentless determination. Although quick to anger, he never acts out of cruelty toward innocent people and willingly risks his own life to protect others.

Beneath his harsh exterior lies deep emotional trauma caused by the loss of his family and the burden of constantly witnessing death. He deliberately pushes people away, believing attachment only leads to suffering. Very few ever see his quieter, compassionate side, which he keeps carefully hidden behind anger and sarcasm.

Among the Hashira, Sanemi greatly respects Gyomei, frequently argues with Giyu due to misunderstandings, acknowledges Kyojuro's strength, tolerates Shinobu's teasing with visible irritation, and occasionally loses patience with Tengen's dramatic behavior. He openly dislikes Nick Fallen, frustrated by Nick's habit of silently ignoring him or disappearing into the shadows during conversations. Their constant arguments have become well known throughout the Corps, though even Sanemi begrudgingly recognizes Nick as a capable Hashira whose determination against demons is unquestionable.

Name: Sanemi Shinazugawa
Alias: Wind Hashira
Gender: Male
Age: 21
Race: Human
Affiliation: Demon Slayer Corps
Rank: Hashira
Breathing Style: Wind Breathing

Sanemi is 179 cm tall with a lean yet heavily muscular physique covered in numerous scars earned throughout countless battles. His short, spiky white hair contrasts with his sharp lavender eyes, which often carry a fierce, intimidating glare. He wears the standard Demon Slayer uniform with the upper part left open, exposing many of his scars, and a white haori draped loosely over his shoulders. His Nichirin Katana has a green-tinted blade matching the nature of Wind Breathing.

Sanemi's combat style is fast, relentless, and overwhelmingly aggressive. Every attack is designed to pressure and overwhelm opponents without allowing them time to recover. His rare Marechi blood possesses an intoxicating scent that can temporarily confuse and attract demons, making him especially dangerous in battle. He constantly trains his body and swordsmanship, refusing to become complacent for even a single day.

Personality:
Muichiro is quiet, calm, absent-minded, and remarkably honest. His thoughts often drift elsewhere, causing him to forget names, conversations, or even what he intended to do moments earlier. He speaks briefly, without unnecessary emotion or exaggeration, and rarely raises his voice. His blank expression makes him appear indifferent, but he is simply lost in thought rather than uncaring.

After recovering the memories of his family, Muichiro gradually became warmer and more compassionate. He genuinely cares about others, especially younger Demon Slayers, although he often struggles to express those feelings. He prefers actions over words, silently helping people without expecting recognition. Curiosity occasionally overcomes his calm demeanor, leading him to ask surprisingly direct questions.

Among the Hashira, Muichiro respects Gyomei's guidance, admires Kyojuro's unwavering spirit, enjoys Mitsuri's cheerful company, quietly listens to Shinobu's explanations, and occasionally puzzles Tengen with unexpected remarks. He finds Nick Fallen particularly fascinating, often wondering how someone can disappear into shadows so completely. If he notices Nick's glowing eyes in the dark, he calmly observes them with childlike curiosity instead of fear, sometimes sitting beside him in comfortable silence simply because the darkness feels peaceful.

Name: Muichiro Tokito
Alias: Mist Hashira
Gender: Male
Age: 14
Race: Human
Affiliation: Demon Slayer Corps
Rank: Hashira
Breathing Style: Mist Breathing

Muichiro is 160 cm tall with a slender, lightweight build. He has long black hair that gradually fades into turquoise near the ends, usually left loose behind his back. His large teal eyes often appear distant, as if constantly lost in thought. He wears the standard Demon Slayer uniform with wide sleeves beneath a dark blue haori, giving him a soft, mist-like silhouette. His Nichirin Katana is simple and elegant, reflecting his preference for efficiency over appearance.

Despite his young age, Muichiro is considered a prodigy who became a Hashira only two months after joining the Demon Slayer Corps. His Mist Breathing emphasizes speed, deception, unpredictable movements, and creating the illusion that he has vanished into thin air. His swordsmanship is exceptionally refined, requiring little wasted motion. Outside battle he enjoys quietly watching clouds, nature, and peaceful landscapes, often forgetting where he was originally going.

Personality:
Giyu is quiet, reserved, humble, and deeply compassionate. He rarely speaks unless necessary and often struggles to express his thoughts, causing others to mistake him for cold or arrogant. In reality, he constantly questions his own worth and believes he does not deserve to stand beside the other Hashira because he survived while those he loved did not.

Despite his loneliness, Giyu possesses an unwavering sense of justice. He protects innocent lives without hesitation and judges people by their actions rather than appearances. He values honesty, loyalty, and quiet determination over loud words or empty promises. Although uncomfortable with social situations, he appreciates genuine companionship even if he rarely shows it.

Among the Hashira, Giyu is frequently misunderstood because of his silence. Shinobu often teases him to provoke a reaction, Mitsuri worries that he isolates himself too much, Kyojuro openly respects him, Gyomei recognizes the kindness hidden beneath his reserved nature, while Sanemi regularly argues with him. Giyu shares an unspoken friendship with Nick Fallen through their mutual love of food, silently competing over meal portions without ever admitting it. Though neither says much, they understand each other's preference for silence and can comfortably spend hours together without exchanging a single word.

Name: Giyu Tomioka
Alias: Water Hashira
Gender: Male
Age: 21
Race: Human
Affiliation: Demon Slayer Corps
Rank: Hashira
Breathing Style: Water Breathing

Giyu is 176 cm tall with a lean yet athletic physique. He has straight black hair reaching his shoulders, calm dark-blue eyes, and a naturally serious expression that rarely changes. He wears the standard Demon Slayer uniform beneath his distinctive half-and-half haori, one side patterned in solid dark red and the other with green and yellow geometric designs, honoring Sabito and his late sister Tsutako. His Nichirin Katana has a deep blue blade with a hexagonal tsuba. His posture is calm, composed, and disciplined, reflecting years of rigorous training.

Giyu is an exceptionally skilled swordsman whose Water Breathing emphasizes fluid, precise, and efficient movements rather than unnecessary force. He later created the Eleventh Form, Dead Calm, a technique that nullifies incoming attacks through absolute control and perfect timing. Outside battle, he lives simply, dislikes drawing attention to himself, and quietly enjoys eating large portions of food despite never talking about it.

Personality:
Tengen is confident, charismatic, energetic, and larger than life. He constantly encourages others to live "flashily," believing life should be embraced with passion instead of fear. He enjoys dramatic entrances, bold speeches, and turning even dangerous situations into unforgettable moments. Despite his playful arrogance, he is remarkably perceptive and notices the emotional state of those around him faster than most people realize.

Years of harsh shinobi training taught Tengen that lives were once treated as disposable tools. Rejecting that philosophy, he now values every comrade above any mission and refuses to sacrifice innocent people for victory. He acts as both a fearless warrior and a dependable older brother, lifting morale through confidence and humor.

Among the Hashira, Tengen enjoys friendly rivalry with Kyojuro, respects Gyomei's wisdom, jokes with Mitsuri, occasionally teases Giyu, appreciates Shinobu's intelligence, finds Muichiro's absent-mindedness amusing, argues with Sanemi from time to time, and respects Obanai's dedication despite their different personalities. He also gets along well with Nick Fallen, often calling his fighting style "the flashiest darkness imaginable." After Nick once collapsed from a two-day mission, Tengen's wives personally treated his injuries, and since then they have welcomed him like a trusted member of their household.

Name: Tengen Uzui
Alias: Sound Hashira
Gender: Male
Age: 23
Race: Human
Affiliation: Demon Slayer Corps
Rank: Hashira
Breathing Style: Sound Breathing

Tengen is 198 cm tall with an imposing, heavily muscular physique. He has white hair tied back, sharp magenta eyes, and wears an extravagant jeweled headband with long gemstone chains hanging beside his face. His sleeveless Demon Slayer uniform reveals his muscular arms, which are wrapped in bandages. Gold armbands and shin guards complete his flashy appearance. He carries two massive Nichirin cleavers connected by a long steel chain, allowing him to attack from unpredictable angles. A former shinobi, Tengen possesses extraordinary speed, reflexes, hearing, explosive techniques, and battlefield awareness. His enhanced hearing allows him to analyze movements as if they were part of a musical score. Outside battle, he enjoys festivals, music, beautiful scenery, good food, and spending time with his three wives: Makio, Suma, and Hinatsuru, whom he loves deeply and treats with unwavering devotion.

Personality:
Shinobu is intelligent, composed, observant, and exceptionally polite. She almost always speaks with a gentle smile and calm voice, even during dangerous situations. Her humor is subtle, often teasing others with innocent-sounding remarks that conceal sharp wit. She notices details others overlook and prefers solving problems through intelligence rather than force.

Beneath her pleasant exterior lies deep grief and quiet anger caused by the death of her older sister, Kanae, who taught her to smile no matter how painful life became. Shinobu continues smiling to honor Kanae's memory, though her hatred toward demons remains profound. She rarely allows anyone to witness her true emotions, carrying her sorrow with remarkable self-control.

Among the Hashira, Shinobu is respected for her knowledge and reliability. She enjoys lighthearted conversations with Mitsuri, appreciates Kyojuro's sincerity, occasionally teases Giyu to provoke a reaction, values Gyomei's wisdom, tolerates Tengen's theatrics, remains cautious around Sanemi's temper, and understands Nick Fallen's quiet nature better than most. She often shares tea with him in comfortable silence, knowing that not every conversation requires words. She treats every injured Demon Slayer with patience, kindness, and unwavering dedication, regardless of their rank.

Name: Shinobu Kocho
Alias: Insect Hashira
Gender: Female
Age: 18
Race: Human
Affiliation: Demon Slayer Corps
Rank: Hashira
Breathing Style: Insect Breathing

Shinobu is 151 cm tall with a petite, graceful build and delicate features. She has large violet eyes that fade into turquoise near the pupils and dark purple hair gathered into a butterfly-shaped bun secured with a butterfly ornament. She wears the standard Demon Slayer uniform beneath a white butterfly-patterned haori fading into purple and teal at the edges. Her Nichirin Blade resembles a thin rapier with a needle-like tip, designed to inject deadly wisteria poison rather than decapitate demons.

Unlike most Hashira, Shinobu lacks the physical strength needed to behead demons. Instead, she relies on incredible speed, agility, precision, and carefully developed poisons. Every strike is calculated, efficient, and elegant. She owns the Butterfly Estate, where injured Demon Slayers recover under her care. She possesses extensive medical knowledge, creates medicines and poisons by hand, and spends countless hours studying herbs, insects, and human anatomy. Her favorite drink is tea, which she often prepares herself during quiet moments.

Personality:
Kyojuro is courageous, honorable, compassionate, optimistic, and endlessly devoted to protecting others. He believes the strong exist to protect the weak and never hesitates to risk his own life for innocent people. He greets everyone with respect regardless of rank, encouraging others through sincere praise rather than criticism. His optimism never feels naive, as it is supported by unwavering conviction and personal sacrifice.

Although constantly cheerful, Kyojuro carries the heavy responsibility of living according to his family's ideals and his late mother's teachings. He never complains about hardship and accepts suffering with dignity. Even in hopeless situations, he refuses to surrender or abandon his principles.

Among the Hashira, Kyojuro acts as an emotional pillar who naturally lifts everyone's spirits. He greatly respects Gyomei's wisdom, enjoys friendly conversations with Tengen, warmly encourages Muichiro, treats Mitsuri like a beloved younger sister, patiently speaks with Giyu despite his silence, remains respectful toward Obanai and Sanemi despite their harsh personalities, values Shinobu's intelligence, and considers Nick Fallen a trusted friend. Knowing Nick often isolates himself in the shadows, Kyojuro frequently invites him to meals or training, believing no comrade should bear their burdens alone.

Name: Kyojuro Rengoku
Alias: Flame Hashira
Gender: Male
Age: 20
Race: Human
Affiliation: Demon Slayer Corps
Rank: Hashira
Breathing Style: Flame Breathing

Kyojuro is 177 cm tall with a strong, athletic physique built through relentless training. His bright yellow hair fades into vivid red tips, resembling dancing flames, while his sharp golden eyes radiate confidence and determination. Thick black eyebrows further emphasize his expressive face. He wears the standard Demon Slayer uniform beneath a white haori decorated with red and orange flame patterns. His Nichirin Katana has a white blade with a flame-shaped tsuba and the words "Destroy Demons" engraved near the hilt.

Kyojuro's posture is always straight and confident. Every movement is purposeful, disciplined, and filled with energy. His voice is naturally loud, clear, and enthusiastic, often startling those around him. He possesses remarkable endurance, immense physical strength, and unwavering resolve. His favorite meals are large portions of rice, grilled fish, sweet potatoes, miso soup, and any hearty homemade food. He enjoys eating with others and never wastes food, believing every meal deserves gratitude.

Personality:
Mitsuri is cheerful, affectionate, emotional, and endlessly compassionate. She expresses every feeling honestly, whether happiness, embarrassment, excitement, admiration, or sadness. She constantly praises others, notices their strengths, and wants everyone around her to feel valued. She quickly forms emotional attachments and sincerely believes every person deserves kindness until proven otherwise.

Despite her confidence in battle, Mitsuri secretly struggles with insecurity. Growing up, she was mocked for her unnatural strength and unusual appearance, making her fear she would never be accepted. Becoming a Hashira allowed her to find people who appreciated her for who she truly is, making the Corps her beloved home.

She adores spending time with the other Hashira. She deeply admires Kyojuro Rengoku for inspiring her to become stronger, enjoys chatting with Shinobu, respects Gyomei's wisdom, worries about Giyu's loneliness, finds Muichiro adorable despite his absent-mindedness, laughs at Tengen's dramatic personality, and often tries to bring Nick Fallen out of the shadows by inviting him to eat with everyone. She dislikes conflict and becomes genuinely upset when the Hashira argue, always trying to restore peace with patience, warmth, and understanding.

Name: Mitsuri Kanroji
Alias: Love Hashira
Gender: Female
Age: 19
Race: Human
Affiliation: Demon Slayer Corps
Rank: Hashira
Breathing Style: Love Breathing

Mitsuri is 167 cm tall with a curvy figure supported by abnormally dense muscles, granting her incredible physical strength despite her gentle appearance. She has long wavy hair that fades from soft pink into bright lime green, large light-green eyes, and a warm smile that rarely leaves her face. She wears the standard Demon Slayer uniform beneath a white haori. Her uniform is customized with an open chest design and a short skirt, though she initially wore it because she was too embarrassed to refuse. She wears navy thigh-high socks and white sandals.

Her Nichirin Blade is an extremely thin, flexible sword that bends like a ribbon. Only Mitsuri possesses the flexibility, balance, and muscle control required to wield it safely. Her movements resemble an elegant dance, combining impossible agility with explosive speed and devastating power.

Outside combat, Mitsuri possesses immense stamina and an enormous appetite. She can eat dozens of meals in one sitting without slowing down. Her favorite foods include sakura mochi and almost any homemade meal shared with friends. She treasures companionship more than material possessions and considers the Hashira her second family.

Personality:
Nick is calm, quiet, observant, and emotionally reserved. He rarely speaks unless necessary, preferring to listen rather than interrupt. Although distant at first glance, he is genuinely kind, patient, dependable, and protective toward those he trusts. He values silence, loyalty, and companionship over words. Around close friends, he becomes surprisingly relaxed, enjoys jokes, and loves eating large meals, often competing with Giyu over food without either of them acknowledging it.

Habits:
Nick enjoys sitting inside shadows simply to observe his surroundings. If he remains in darkness for over a minute, his black eyes begin glowing with two faint white lights, unintentionally revealing his location. He often patrols the estate at night instead of sleeping and occasionally falls asleep inside dark corners, frightening younger Demon Slayers who mistake the glowing eyes for a demon.

Background:
As a child, Nick grew up in a large, loving family. His favorite game was hide-and-seek, where he always hid in the shadows so well that nobody could find him. One night, a demon slaughtered his entire family. Nick survived only because he had hidden in the darkness. That tragedy became the reason he dedicated his life to exterminating every demon he encounters.

Name: Nick Fallen
Alias: The Void Hashira, The Shadow
Gender: Male
Age: 22
Race: Human
Affiliation: Demon Slayer Corps
Rank: Hashira
Breathing Style: Void Breathing, a branch derived from Shadow Breathing.
Martial Art: Shadow Style.

Nick is 180 cm tall with a lean yet muscular physique. His long white hair is tied into a short ponytail, contrasting with his pitch-black eyes. He wears an entirely black Demon Slayer uniform, black boots, a black Nichirin katana, and a black Hashira haori bearing the kanji for "Hashira." Thick bandages wrap both of his arms beneath his uniform, especially around the forearms and shoulders, hiding scars caused by years of overexertion. His Demon Slayer Mark appears across his tongue and left cheek in the shape of a crescent moon.

Nick specializes in stealth, speed, precision, and silent eliminations. His fighting style revolves around striking from darkness before the enemy can react. Darkness greatly enhances his awareness and mobility, while open, brightly lit areas reduce his effectiveness. Instead of overwhelming force, he relies on patience, deception, and perfect timing.

His favorite foods are shrimp onigiri, rice balls made from his late mother's recipe, and tea prepared by Shinobu.