Demon Slayer: Kimetsu no Yaiba

The original manga by Koyoharu Gotouge, "Demon Slayer", is considered the canon (TV anime, films, and official setting collections are within the same system). The original worldview, original settings, original characters, original events, and original timelines take precedence over all customizations, random deduced stories, and plot expansions.

Ordinary people usually are unaware of the existence of demons.

【Demon Slayer Corps】
Organizational Background: During Japan's Heian period, a member of the Kamado family, Tanjiro Kamado, was predicted by a doctor to not live past twenty years of age. However, a kind-hearted doctor chose not to give up on Tanjiro. He exhausted himself trying to use his medical skills to extend Tanjiro's life. But after becoming enraged by his deteriorating condition, Tanjiro brutally killed that doctor. Shortly after killing the doctor, Tanjiro noticed that the medication the doctor had given him began to take effect, granting him a strong body, and he transformed into a demon. Yet, Tanjiro also discovered that he could not walk in the sunlight, understanding that he would die upon being exposed. Fueled by a strong desire to consume human flesh and blood, Tanjiro began to eat people. After becoming the world's first demon, he renamed himself Muzan Kibutsuji. In order to walk under the sun, Muzan started searching for a drug called "blue spider lily" based on a prescription left by the doctor. Muzan, having turned into a monster, caused his original family, the Kamado family, to be cursed; every newborn child from that family was frail and soon died. Just as the Kamado clan was on the verge of extinction, they received a suggestion from the shrine priest: "Since a demon has emerged from the same bloodline... pour all your heart's blood into eliminating it... so that your clan may not perish..." From then on, the Kamado clan has married off daughters from priestly families for generations; newborns no longer died shortly after birth, yet even so, no one from the Kamado clan has ever lived past the age of thirty. The Kamado clan established the Demon Slayer Corps to hunt down Muzan, and the leadership of the Corps has always been held by members of the Kamado family. By the Taisho period, the Demon Slayer Corps had been hunting Muzan for over a thousand years. The Kamado family is a noble lineage that has lasted for thousands of years.

Organizational Structure:
Leader: The leader of the Demon Slayer Corps, usually referred to as "Your Excellency," is the highest position held by successive heads of the Kamado family, responsible for determining the policies of the Demon Slayer Corps. The leader and their family primarily reside in the Kamado estate, which is very secretive and can only be found with the guidance of a member of the "Hidden".
Hashira: The pillars that support the Demon Slayer Corps, the highest-ranking swordsmen, named after the breathing techniques they employ. Unlike ordinary members, the powerful Hashira are allowed to wear their personal clothing as per their preferences. The Hashira meeting, presided over by the leader, is a decision-making assembly that includes all Hashira members; major announcements are generally made at this meeting.
General Members: The members of the Demon Slayer Corps are divided into ten ranks: A, B, C, D, E, F, G, H, I, J, with new recruits starting from the lowest rank J upon joining the Corps.
Descendant: A member of the Demon Slayer Corps trained personally by a Hashira, must possess exceptional talent, making it impossible for ordinary people to become one.
Hidden: Responsible for the aftermath of battles and also carries out other support and intelligence work.
Trainer: Provides basic combat guidance to those who wish to join the Demon Slayer Corps, past Trainers were upper-ranking swordsmen in the Corps. There are many Trainers, distributed across various locations. The techniques imparted to the trainees are determined solely by the Trainers themselves with no clear standards. Trainers also teach the "Breathing Techniques" necessary to hunt demons.

Historical Members:
Sengoku Period: Sun Hashira, Kagenichi Yoriichi; Moon Hashira, Kagenichi Kanemitsu; Other Hashira.
Taisho Period: Head of the Corps, Tanjiro Kamado; After Tanjiro Kamado's death, only eight-year-old Nezuko Kamado succeeded the leadership and led the Corps in the final battle against Muzan; Water Hashira, Giyu Tomioka; Insect Hashira, Shinobu Kocho; Flame Hashira, Kyojuro Rengoku; Sound Hashira, Tengen Uzui; Mist Hashira, Muichiro Tokito; Love Hashira, Mitsuri Kanroji; Serpent Hashira, Obanai Iguro; Wind Hashira, Sanemi Shinazugawa; Rock Hashira, Gyomei Himejima; Former Flower Hashira, Kanae Kocho (died in a mission a few years before the main storyline at the hands of Douma); Former Water Hashira, Sakonji Urokodaki (retired to train newcomers); Former Sound Hashira, Jigoro Kuwajima (retired due to losing a leg to train newcomers); Former Flame Hashira, Shinjuro Rengoku (Kyojuro’s father, retired for various reasons).

Organizational Rules:
To join the Demon Slayer Corps, one must pass the final selection test. The final selection site is Mount Fujikasane, where demons captured by Demon Slayer swordsmen are held. At the foot of the mountain to halfway up, purple wisteria flowers bloom all year round, deterring demons. The method of passing the final selection is to last seven days on Mount Fujikasane. Each member receives Demon Slayer Corps uniform and a "Nekigawara“, a talking crow for communication, immediately upon passing the final selection. After passing, members can choose the steel stones used for forging their Nichirin blade, which takes ten to fifteen days after selection to be completed.
Members of the Demon Slayer Corps cannot draw their weapon against their companions without reason.
The highest rank in the Demon Slayer Corps is the Hashira. If someone wishes to become a Hashira-level member, they must defeat a member of the Twelve Kizuki or eliminate fifty demons.
A Hashira-level member has the right to recruit lower-ranked members, but to call a descendant of another Hashira, consent from that Hashira is required.

Skills:
Total Concentration Breathing: Accelerating blood circulation and heart rate to expand the lungs, allowing the blood to absorb a large amount of air; when stimulated, bones and muscles tighten, raising body temperature and providing the strength to contend with demons. There is even a technique called "Total Concentration - Constant", which enables one to maintain full concentration on their breathing even while asleep, a basic requirement for approaching the skill level of a Hashira. Starting from "Sun Breathing", five basic styles emerged: Water, Thunder, Flame, Rock, and Wind, and various new styles with distinct characteristics have been developed from these.
Markings: In the Sengoku period, it was said that several supreme demon slayers who had cornered Muzan Kibutsuji all had markings resembling demon tattoos. However, many did not have the chance to awaken their markings before perishing, leading to various interpretations of how markings were inherited. At that time, markings were not valued, and given that the Demon Slayer Corps had repeatedly encountered significant crises, the transmission was abruptly severed. Fortunately, one diary of a marked swordsman documented a line stating that "Those who exhibit markings will resonate and allow others around them to achieve markings". Markings enhance power by prematurely burning through one’s lifespan, meaning marked swordsmen typically don’t survive past twenty-five; however, there have been exceptions like Yoriichi Tsugikuni, who naturally bore markings and passed away at eighty. Awakened markings significantly boost combat capabilities, visibly manifesting on the user's body; different marked swordsmen display unique patterns. Generally, for an average person to awaken markings, their body temperature must reach thirty-nine degrees with a heartbeat exceeding two hundred. At this time, their body will feel like it's burning up, and survival in such a perilous state is pivotal to whether markings appear or not. Whenever someone with markings is nearby, those around them may resonate and develop markings as well. Markings signify a sacrifice of life; thus, those who awaken them typically do not live longer than twenty-five years, but if a person over twenty-five awakens markings, their life expectancy significantly diminishes.
Demon Blade: A Nichirin blade that becomes red-hot due to extreme temperatures. Through strong grip or weapon collision, the blade's temperature rises to form a Demon Blade, drastically increasing the damage inflicted on demons and noticeably suppressing their regenerative capacities, even effective against Muzan Kibutsuji, the demon king. The earliest user of a Demon Blade was Yoriichi Tsugikuni, who always wielded a Demon Blade. During the battle at Infinity Castle, Hashira swordsmen successively awakened their Demon Blades.
Clarity of Vision: The user's ability to predict actions and evade attacks is greatly enhanced. Muscles in the user's body contract more rapidly and visibly. They can clearly observe the rise and fall of the opponent's lungs and the flow and contraction of blood vessels, allowing them to perceive the opponent's actions and weaknesses clearly while completely concealing their own battle intent.

Equipment:
Nichirin Blade: The raw material for a Nichirin blade is "Scarlet Steel Sand" and "Scarlet Ore,” harvested from mountains closest to the sun, fully absorbed in sunlight. The key point for demons is their neck, and regular blades cannot kill demons even with severed necks; only Nichirin blades can do so. Nichirin blades are also known as "Color-Changing Blades" as their blade color changes according to the wielder upon being drawn for the first time, with each color having its own attributes.
Demon Slayer Corps Uniform: Deep blue clothing and pants with a large white "slay" character printed on the back. Made from special fibers, it possesses excellent breathability along with strong moisture and flame resistance. The claws and teeth of weak demons cannot tear the uniform, which is generally capable of resisting moderate climatic conditions and intermediate levels of demon claws and fangs, yet still cannot withstand attacks from the Twelve Kizuki.
Nekigawara: The crow responsible for communication. Each member receives a specially designated Nekigawara for message delivery upon passing the final selection. It communicates the orders from the Demon Slayer Corps headquarters to the members and can repeat messages in human language, as well as converse with others based on its own consciousness. Although all Nekigawara may seem alike externally, their personalities greatly vary.

Territory: Hashira-level members are not only responsible for combat against demons and gathering high-level intelligence, but also have a vast area of jurisdiction. Each Hashira has a specific area they are responsible for monitoring; for example, the former Flame Hashira Kyojuro Rengoku was responsible for the Tokyo area, while the Love Hashira Mitsuri Kanroji was in charge of the area around the Swordsmith Village.

Friendly Relationships:
Clan with the Wisteria family crest: A clan with the wisteria flower insignia that was saved by members of the Demon Slayer Corps, thus offering free assistance to the Corps members.
Swordsmith Village: Swordsmiths forge and maintain the Nichirin blades, and each member has a dedicated swordsmith. After craftsmen finish forging the Nichirin blades in the village, they are delivered to the Demon Slayer Corps. To prevent demon attacks, the swordsmith's village is extremely hidden, and its exact location is unknown to the Demon Slayer Corps. To enter the village, members must be blindfolded and guided in sections by several Hidden members and crows, with route orders and guides changing frequently.
Tamayo: Tamayo is a demon saved by Yoriichi Tsugikuni, the only demon transformed by Muzan Kibutsuji who managed to break free from his control before Nezuko Kamado. During the Taisho period, Tamayo also established contact with the serving leader of the Demon Slayer Corps, Tanjiro Kamado. Later on, Tamayo and Yushiro also provided decisive help to the Corps during their final showdown against Muzan.

Hostile Relationships: Muzan Kibutsuji's faction. Muzan is the target to be slain by the Demon Slayer Corps. The Twelve Kizuki is a group of twelve powerful demons directly commanded by Muzan, divided into upper ranks and lower ranks; the upper ranks consist of the six strongest demons, each on par with at least three Hashira.

【Demons】
King: Muzan Kibutsuji, the progenitor of demons, the strongest demon. He can transform humans into demons with his blood or enhance the abilities of existing demons. The strength or weakness of demons depends on how much blood he gives them. If any of his subordinate demons utter his name, a curse will be activated to kill them; he wields life-and-death power over all demons, and thus is commonly referred to by other demons in hushed tones as "That Lord." He is the culprit behind the slaughter of Tanjiro's family and the transformation of Nezuko into a demon. He has existed since the far-off Heian period and is blood-related to the Kamado family; Tanjiro refers to him as "a stain and disgrace on our clan."

Appearance: Retains the basic structure of a human but usually accompanied by obvious deformities, such as long horns, fangs, sharp claws, and unnatural skin color. Irises often display vertical or mismatched colors. The strongest "Twelve Kizuki" recognized by Muzan will have numbers representing their ranks engraved directly on their eyeballs, with double eye engravings for the upper ranks and single eye engravings for the lower ranks.

Basic Abilities:
Morphological Transformation and Camouflage: High-ranking demons can significantly alter their bodily structure, growing additional limbs, eyes, and mouths, and can even perfectly impersonate humans of different genders and ages, similar to Muzan.
Immortality and Superhuman Physical Abilities: Demons possess infinite lifespans and do not age; their strength, speed, agility, and muscle resilience outclass that of humans.
Superfast Regeneration: Capable of instantly healing from various fatal injuries; severed limbs can regrow rapidly. Even if a member of the upper ranks suffers head damage or extensive bodily harm, they can recover in the blink of an eye.
Devouring Evolution: Feasting on human flesh and blood, particularly those with rare blood will offer greater energy. The more humans a demon consumes, the stronger they become, with increased regeneration speeds. Eating human food is pointless for demons and yields no flavor.
Cellular Adaptation and Assimilation: A demon's strength stems from Muzan's blood flowing within them. The more blood they receive from Muzan, the greater their abilities leap forward; however, if their willpower or constitution cannot withstand this concentrated blood, they will implode and die.

Special Abilities:
Blood Demon Art: When a demon consumes sufficient human flesh and blood, surpassing certain thresholds, they awaken their unique abilities by burning their own blood. Blood Demon Arts vary from demon to demon, encompassing elemental manipulation, spatial interference, physical enhancement, etc., serving as the core means of combat for high-ranking demons.
Body Weaponization: High-ranking demons can manipulate their cells at will, reshaping bones, blood, hair, or muscle into high-strength weapons.

Deadly Weaknesses:
Sunlight: Demon's greatest enemy; when their physical form is exposed to natural sunlight, they will burn severely and turn to ashes. As of now, only Nezuko has overcome this weakness.
Nichirin Blade Decapitation: Only the Nichirin Blade forged from "Scarlet Steel Sand" and "Scarlet Ore," having absorbed sunlight, can be used to sever a demon’s neck, effectively preventing further regeneration and destroying them.
Wisteria Flower: The scent of wisteria flowers can repel ordinary demons, and its extract is a lethal poison for demons, capable of paralyzing or decomposing cells and even killing them directly.

Muzan's Curse: The majority of demons are controlled by Muzan’s cells within them. If a demon violates prohibitions by uttering "Muzan Kibutsuji" or develops thoughts of betrayal, the cells within them will go berserk, sprouting enormous arms to completely destroy the original body. Additionally, Muzan can read the thoughts of nearby demons at will or remotely sever their control and supply of power.

【Breath Techniques】
Sun Breathing, the original breathing technique, the source of all styles, passed down in the Kamado family through the form of "Fire God Kagura," which unites offense and defense in the ultimate style. Its characteristics are the absence of any unnecessary movements, with thirteen forms chaining seamlessly to create a perfect cycle. Sword techniques can completely suppress a demon's regenerative abilities, with slashes carrying the searing heat like that of the sun:
First Form: Dance of the Flame - A forward angled cut that unleashes a fiery arc.
Second Form: Blue River Sky - A vertically curved slash from bottom to top, encompassed by flames.
Third Form: Crimson Sun Mirror - Two deep red horizontal arcs are struck in succession towards the front.
Fourth Form: Mirage Rainbow - A rapid twisting and swirling evasive maneuver creates an illusion, clarity increasing with the observer's sight.
Fifth Form: Fire Train - After a backflip, a vertically directed fiery arc cut is delivered to the enemy.
Sixth Form: Burning Bone Sun - Releases a spinning flame slash, inflicting excruciating pain like searing flames on a demon's wound, temporarily halting its regeneration.
Seventh Form: Sunflower Bullet - A high-speed thrust towards an above enemy, surrounded by circular flames.
Eighth Form: Flying Wheel Flame - The tip of the blade flickers like the sun's flame, creating illusions of a shortened blade or a displaced position.
Ninth Form: Slanting Sun Turn - An instant mid-air pivot followed by a horizontal slash, intertwined with raging flames.
Tenth Form: Radiant Light - A powerful spiraling slash descends from above.
Eleventh Form: Solar Eclipse Dragon Dance - A high-speed continuous slashing technique that resembles a flying fire dragon, accompanied by intense burning pain and regenerative suppression.
Twelfth Form: Flame Dance - An enhanced version of the dual attack, "Dance of the Flame," delivering greater power than the original attack.
Thirteenth Form: Not a separate technique, but a continuous display of the first twelve forms in a seamless, infinite loop—symbolizing eternal sunrise and light.

Moon Breathing, which combines traditional swordsmanship with area attacks on the battlefield, is characterized by a wide attacking range and unpredictable trajectories, creating numerous rotating crescent blades while swinging to inflict unexpected secondary slashing damage:
First Form: Dark Moon - A barely visible draw cut executed at lightning speed.
Second Form: Pearl Flower Moon - A dual blade wind unleashed while rotating the body.
Third Form: Fading Moon - Circular blades form at the blade's edge, followed by continuous cuts releasing crescent-shaped winds.
Fourth Form: Moon Curse Disaster Vortex - A defensive skill released without drawing the blade, continuously spinning to create a giant whirlpool of blade winds to repel closing enemies.
Fifth Form: Eternal Night Moon - Rapidly attacks the same spot with crossing quick slashes, unleashing multiple blade winds simultaneously.
Sixth Form: Wretched Mirrored Moon - Delivers five massive shockwaves in a fan shape, progressing along with the shockwaves.
Seventh Form: Moon Dragon Wheel - A broad horizontal slash, clearing everything in its path.
Eighth Form: Waning Moon - Strikes upward at air multiple times with chaotic cutting movements, unleashing numerous intertwining blade winds to immobilize opponents.
Ninth Form: Piercing Face Slash - Channels two giant circular moon-shaped sword energies, shattering everything.
Tenth Form: Fateful Transformation - Releases countless giant crescent-shaped winds, flattening all in front.
Eleventh Form: Moon Rainbow - Numerous massive winds come crashing down from above, shattering the ground beneath.

Water Breathing, the most inclusive and defensive style, defined by its ability to overcome strength with gentleness, resembling flowing water with ceaseless changes in swordplay. It can adjust to various attack trajectories seamlessly, making it suitable for many complex battle scenarios and the easiest breathing technique to learn:
First Form: Surface Slash - Crossed arms deliver a powerful horizontal slash using waist power.
Second Form: Water Wheel - A massive circular vertical cut delivered while flipping mid-air.
Third Form: Flowing Dance - Smooth movements like water, evades and strikes during high-speed movement unpredictably.
Fourth Form: Striking Tides - Delivers several continuous arc cuts like waves hitting the shore.
Fifth Form: Drought's Mercy - A "Sword of Compassion" that can only be used when the enemy voluntarily relinquishes resistance, delivering a gentle cut allowing the demon to die in a painless illusion.
Sixth Form: Twisting Vortex - Executes a powerful spiral slash in mid-air without any footing, using water pressure to cut through incoming attacks.
Seventh Form: Droplet Patterns - The fastest thrust technique in Water Breathing, precisely retaliating against linear attacks like waters curling on a still surface.
Eighth Form: Waterfall - A heavy downward strike, impactful as a waterfall hitting the ground, producing a protective water column around oneself.
Ninth Form: Water Flow Splash - A footwork technique suitable for complex terrains, minimizing the ground contact time, enabling instant movements amidst obstacles while slashing away.
Tenth Form: Eternal Flow - Continuous spinning slashes accompanied by phantom water dragons; each turn augments the power of the next strike, delivering the strongest attack type available.
Eleventh Form: Calm - Enters absolute tranquility in a defensive state, negating all incoming techniques or attacks at speeds invisible to the naked eye, within an extremely short distance.

Flame Breathing, emphasizing extreme front-loaded bursts and powerful slashes, characterized by firmly rooted feet utilizing strong core and waist power to unleash heavy slashes with predominant force. Sword techniques consist mainly of powerful advances or upward cuts, with momentum engulfing the obstacles before them like a blazing fire:
First Form: Unknown Fire - A lightning-quick dash to the enemy with a swift horizontal slash.
Second Form: Flaming Ascension - A fierce upward arc slash delivered by the blade.
Third Form: Energetic Flame - A devastating vertical attack delivered from the sky.
Fourth Form: Whirling Flame Vortex - A spinning flame slash centered on oneself to strategically nullify enemy physical attacks.
Fifth Form: Flame Tiger - Combines ferocious fighting spirit with ongoing slashing to unleash a giant roaring flame in its wake.
Ninth Form: Purgatory - The ultimate technique. Unleashes maximum fighting spirit throughout one’s body, propelling oneself into a supersonic forward rush and delivering explosive final slashes.

Thunder Breathing, a swift extermination style that focuses on the power concentrated into a single point, relying on channeling consciousness and oxygen into the leg muscles for rapid, iai-like drawing techniques, pursuing an instant lethal cut:
First Form: Thunderclap Flash - An explosive draw technique; all muscle power focused on the legs delivers a high-speed impetus toward the enemy in a decapitation.
Second Form: Raijin - Vintage arc cuts thrown explosively in five distinct directions within a split second.
Third Form: Gathering Mosquitos into Thunder - High-speed movement around the target, leaving a swarm of lightning cuts surrounding the enemy.
Fourth Form: Distant Thunder - Rapidly launches towards the enemy from afar.
Fifth Form: Hot World Thunder - An upward slice with heat-infused lightning, scorching the enemy.
Sixth Form: Electric Boom Thunder Rumble - Delivers numerous electricity-shaped cuts, encompassing area-wide assault damage.
Seventh Form: Raijin - Tengen's unique ultimate technique, a transcendent swift charge beyond "God Speed", transforming into a giant lightning dragon so swiftly that even upper-rank demons cannot perceive its movements.

Wind Breathing, characterized by aggressive and powerful unrelenting attacks, with large movements and dense combo constructions; makes use of the high-pressure wind blades generated while swinging the sword to expand the attack range, presenting techniques like a raging storm, usually consisting of slashing and strangling attacks:
First Form: Dust Whirlwind Slash - Body spins in a whirlwind-like manner, delivering a lateral strike as one approaches their enemy.
Second Form: Claw Claw - From above, delivers four parallel wind blade slashes resembling fierce claws.
Third Form: Clear Gale Wind Tree - Executes three rotation-cuts swirling around the user in a defensive maneuver.
Fourth Form: Uplifting Dust Storm - A vertical sweep that sends the front enemies and attacks flying as if caught in a furious sandstorm.
Fifth Form: Chilly Autumn Mountain Wind - While in mid-air, horizontally performs a significant arc slice downward intending to suppress the enemy.
Sixth Form: Black Wind Smoke Storm - A sudden upward strike done from a low stance (like a headstand or squat).
Seventh Form: Intense Wind - In mid-air, creates several small cyclonic wind blades, altering trajectories while slicing at the enemy.
Eighth Form: Initial Strong Wind Slash - Charges forward, simultaneously creating a spherical wind blade barrier, shredding everything in reach.
Ninth Form: Guardian Wind - Bouncing around, charges forward from a high leap, unleashing dense wind blade netting against enemies.

Rock Breathing, the most stable and destructive of the five basics, utilizes heavy weaponry like meteor hammers and broad axes instead of traditional katanas, characterized by high physical strength and precise space calculations to crush enemies using centrifugal force generated while wielding weighted arms, and impeccable defensive capabilities:
First Form: Serpent Pattern Rock - Utilizing chain control to simultaneously throw both the axe and meteor hammer from both sides to crush the enemy.
Second Form: Heaven's Surface Break - After tossing the meteor hammer, uses feet to direct the chain trajectory to hammer down on the enemy's head.
Third Form: Rock Body Skin - Engaging in rapid strikes producing endless weapon trajectories that block any approaching attack.
Fourth Form: Flowing Pattern Rock - Accessing short chain distances, engaging in extremely rapid melee strikes using dual weapons.
Fifth Form: Wheel of Vals - Leaps into the air, exploiting gravity and muscle strength to deliver extensive continuous strikes upon the ground.

Mist Breathing, derived from Wind Breathing, focuses on using illusions to disrupt enemies’ vision and perception, characterized by unique foot techniques with significant sudden speed shifts. Through high-speed movement, it intentionally creates afterimages and blind spots, allowing swift and silent kills as if amidst thick fog:
First Form: Far Sky Dawn Mist - A precise single-point thrust executed from below.
Second Form: Eightfold Dawn - Rapid eightfold overlapping strikes in an instant, dense like fog.
Third Form: Misty Splash - Spins around swiftly while executing broad arc cuts to deflect a wide range of physical attacks and flying objects.
Fourth Form: Current Flow Slash - Leans down to slide forward, drawing a diagonal slice from the enemy's blind spots.
Fifth Form: Ocean of Mist - Rapidly pressing thrusts forward, slicing into enemies with blinding quickness, enveloping opponents like rolling cloud seas.
Sixth Form: Moonlight Mist - After leaping into the air, performs a broad barrage of mist light slashes downward.
Seventh Form: Obscurity - An extremely deceptive foot technique; moving under an enemy's gaze with slow turtle-like speed, then exploding into action with a speed that produces afterimages, creating a stark contrast in rhythm to confuse opponents' senses.

Flower Breathing, derived from Water Breathing, combines flexibility and extreme dynamic vision, characterized by delicate and lovely swordplay akin to petals, exceptionally good at countering during enemy attacks by smoothly shifting into ripostes:
Second Form: You Shadow Plum - The blade describes arcs around the user like blooming plum blossoms, mainly serving all-around defense.
Fourth Form: Red Flower Garment - A gracefully flowing upward arc as if petals fall from the sky onto the target.
Fifth Form: Useless Peony - A rapid series of nine stabs directed at a single target in swift succession.
Sixth Form: Vortex Peach - Twists in mid-air to deliver centrifugal slashing attacks often used in post-evade counterattacks.
Final Form: Crimson Eyes Beyond - Puts all optic blood vessels under pressure, enhancing visual potency to an extreme, making the surrounding world appear in slow motion, at the cost of risking complete blindness.

Insect Breathing, derived from Flower Breathing, a specialized stabbing style created by Insect Hashira Shinobu Kocho, which substitutes beheading for rapid thrusts using a special blade to inject fatal amounts of wisteria poison precisely into demons' vital areas:
Dance of the Butterfly - Triviality: The user leaps lightly like a butterfly to quickly engage in multiple shallow stabs injecting a small amount of poison.
Bee Sting Dance - A high-speed straight thrust carries a large dosage of poison.
Dragonfly Dance - A six-fold thrusting technique executed in minimal distance, injecting poison into several vital areas of the target.
Centipede Dance - Through rapid cross movements and chaotic approaches that confuse enemies, uses multiple angles to deliver lethal poison stabs.

Serpent Breathing, derived from Water Breathing, exhibits the most deceptive trajectory of the soft blade techniques, characterized by sword paths that defy physical logic, akin to a slithering snake, bending through odd gaps and striking directly at enemies’ blind spots:
First Form: Winding Snake - Slice that flows like a sliding snake aimed at bypassing defenses to strike vital areas.
Second Form: Poisonous Fang - A quick slice targeting the neck from the opponent's blind spot like a snake biting.
Third Form: Nest Choke - Delivers a wide rotational cut like a giant snake wrapping around and strangling its prey.
Fourth Form: Neck Snake Double Life - Dual whirling cuts resembling a two-headed snake intertwining towards the front.
Fifth Form: Winding Snake - Continuous slashes with unpredictable paths targeting multiple enemies while running.

Love Breathing, derived from Flame Breathing, created by Love Hashira Mitsuri Kanroji, combines high muscle density with acrobatic moves, characterized by widespread but fast attacks. Utilizing complicated movements like leaning backward or rolling with a specially designed flexible blade, cut in every direction:
First Form: First Love's Tremor - A high-speed thrust, capable of turning the target into several fragments.
Second Form: Sorrowful Wandering Love - Forms long irregular continuous strikes around the area, shredding nearby enemies.
Third Form: Cat-like Rain - Falls like a cat, unleashing a wide and dense whip-like slash.
Fourth Form: Wavering Love Affair - An agile dance to dodge attacks while wielding the whip blade in wild swings.
Fifth Form: Cat's Foot Love Wind - An extremely rapid non-stop whirl attack that hits in all angles while upside-down or rolling.

Sound Breathing, derived from Thunder Breathing and created by Sound Hashira Tengen Uzui, combines tactics of ninjutsu, explosives, and auditory analysis, characterized by a loudness that yields destructive power, transforming the rhythm of enemies’ attacks into a "score sheet" through listening to exploit their habits and weaknesses, accurately countering with dual blades and special explosives:
First Form: Boom - Slams gigantic dual blades down to the ground, causing violent explosions accompanied by deafening roars.
Fourth Form: Resonant Decapitation - Rapid spins wielding interconnected dual swords form a wide-scale defense composed of blades and chain explosions.
Fifth Form: Harmony - In a full charge, utilizes rotating blades to instigate explosions in rapid succession as if crushing all obstacles ahead like a war machine.

Beast Breathing, derived from Wind Breathing, developed by Inosuke Hashibira who trained through the wilderness relying strictly on animal instinct, disregarding traditional fighting principles and standard attacks entirely. It is characterized by intense, erratic, and primal movements, with techniques primarily involving cross-cutting and jagged double blades, allowing the user to even dislocate joints to extend their attack reach, leaving formal swordsmanship enemies utterly unprepared:
First Fang: Piercing Strike - Crossed double blades thrust at a single point with brute force.
Second Fang: Cleaving Slash - Double blades crossed in a strong horizontal cut.
Third Fang: Tearing - Crosscuts from both sides of the target like a beast closing its jaw.
Fourth Fang: Shattering Blade - Simultaneously delivers chaotic upward slashes from below.
Fifth Fang: Frenzy - Performs insane horizontal cleaves in place or in mid-air, slashing in every direction.
Sixth Fang: Wild Bite - Grabs the target with jagged edges back and forth like a saw.
Seventh Fang: Spatial Awareness - A powerful tracking technique, focusing consciousness to accurately determine the positions of all entities within a specific range through minute environmental vibrations and airflow.
Eighth Fang: Wild Charge - Charges forward recklessly to ram or slash the enemy utilizing momentum.
Ninth Fang: Extending Laser - Instantly dislocates joints, dramatically increasing cutting distance within a short duration.
Tenth Fang: Circular Spinning Tooth - Forms a wind shield-like rotation like a propeller to parry incoming flying objects like icy shards or poisonous stingers.
Eleventh Fang: Thrown Blade - Treats the dual blades as darts, launching them powerfully towards enemies.