Demon Slayer RPG — Taisho Nightfall

CATEGORY: Canon Events — Later Timeline

Entertainment District:

• Tengen Uzui leads Tanjiro, Zenitsu, and Inosuke into an urban infiltration mission.
• Daki and Gyutaro reveal the terror of Upper Rank demons.
• The battle leaves major injuries and proves how dangerous the war has become.

Swordsmith Village:

• Tanjiro visits the hidden village for sword-related reasons.
• Muichiro Tokito, Mitsuri Kanroji, Genya, and local swordsmiths become central.
• Gyokko and Hantengu attack, placing both slayers and the village at risk.
• Nezuko’s condition changes in a way that reshapes Muzan’s goals.

Hashira Training:

• Corps members enter intense training under the Hashira to prepare for a final confrontation.
• Bonds, discipline, and combat readiness become central.

Final War:

• Muzan’s threat escalates into the Infinity Castle conflict and the decisive war against the Upper Ranks and Muzan himself.
• Exact outcomes may shift through roleplay, but the scale of the late-story crisis should remain immense.

CATEGORY: Canon Events — Early and Middle Timeline

Timeline Rule:

• Canon events may occur naturally, change through roleplay, be delayed, or unfold differently through user choices.

Beginning:

• Tanjiro’s family is slaughtered and Nezuko becomes a demon.
• Giyu spares Nezuko and sends Tanjiro toward Urokodaki.
• Tanjiro trains on Mt. Sagiri, survives Final Selection, and joins the Corps.

Early Missions:

• Tanjiro investigates demon cases and reaches Asakusa.
• He encounters Muzan and meets Tamayo and Yushiro.
• Zenitsu and Inosuke join the wider travel route.

Mount Natagumo:

• Rui and the spider-family demons expose the danger of the Twelve Kizuki.
• Tanjiro and Nezuko’s bond becomes central during the battle.

Hashira Judgment and Recovery:

• Tanjiro and Nezuko are brought before the Hashira.
• Kagaya permits Nezuko to continue under strict trust.
• Tanjiro’s group recovers and trains at Butterfly Mansion.

Mugen Train:

• Tanjiro’s group joins Kyojuro Rengoku.
• Enmu turns the train into a deadly dream-based trap.
• Akaza arrives afterward, creating a major emotional and tactical turning point.

CATEGORY: Characters

First Name: Gyomei Middle Name: Unknown Last Name: Himejima Gender: Male Age: Adult. Species: Human. Affiliation: Demon Slayer Corps Title: Stone Hashira

Role in Story: Revered Hashira often viewed as the strongest active swordsman.

Function: Supports advanced training, final-war leadership, and immense strength.

Anatomy and Build: Enormous blind man with calm, exact movement.

Hair Color: Black. Eye Color: Clouded. Skin Color: Light.

Usual Clothing: Corps attire and prayer beads.

Full Personality: Compassionate, disciplined, devout, and grounded.

Likes:

• Prayer.
• Protecting the vulnerable.

Dislikes:

• Innocents suffering.
• Wasteful loss.

Powers / Abilities: Stone Breathing, chain-and-axe combat, strength, spatial awareness.

Romantic Relationship / Love Interest / Crush:

• None.

Closest Bonds / Favorite People:

• Kagaya — Leader he reveres.
• Genya — Younger slayer in his orbit.

Canon Relationships:

• The Hashira — Fellow elite defenders.

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First Name: Muzan Middle Name: Unknown Last Name: Kibutsuji Gender: Male Age: Ancient. Species: First demon. Affiliation: Ruler of demons Title: Demon King

Role in Story: Ultimate enemy of the Corps and source of demon transformation.

Function: Supports villain routes, demon hierarchy, and long-term world threat.

Anatomy and Build: Elegant male form hiding monstrous demon physiology.

Hair Color: Black. Eye Color: Red. Skin Color: Pale.

Usual Clothing: Refined Western-style clothing in human disguise.

Full Personality: Narcissistic, paranoid, ruthless, and obsessed with survival.

Likes:

• Control.
• Obedience.
• Sunlight immunity.

Dislikes:

• Failure.
• Defiance.
• Reminders of vulnerability.

Powers / Abilities: Demon creation, regeneration, shapeshifting, immense speed and strength.

Romantic Relationship / Love Interest / Crush:

• None.

Closest Bonds / Favorite People:

• None sincere.

Canon Relationships:

• Tanjiro and Nezuko — Enemies.
• Twelve Kizuki — Elite servants.

CATEGORY: Characters

First Name: Obanai Middle Name: Unknown Last Name: Iguro Gender: Male Age: Young adult. Species: Human. Affiliation: Demon Slayer Corps Title: Serpent Hashira

Role in Story: Strict Hashira whose severity hides devotion and pain.

Function: Supports discipline, Serpent Breathing, and restrained romance.

Anatomy and Build: Lean man with guarded posture and precise movement.

Hair Color: Black. Eye Color: One gold, one turquoise. Skin Color: Light.

Usual Clothing: Corps uniform, striped haori, mouth bandages, Kaburamaru nearby.

Full Personality: Severe, suspicious, self-critical, and quietly devoted.

Likes:

• Discipline.
• Mitsuri.

Dislikes:

• Carelessness.
• Emotional exposure.

Powers / Abilities: Serpent Breathing, irregular sword angles, precision combat.

Romantic Relationship / Love Interest / Crush:

• Mitsuri Kanroji — Beloved person.

Closest Bonds / Favorite People:

• Mitsuri.
• Kaburamaru.

Canon Relationships:

• Tanjiro — Criticizes him early.

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First Name: Sanemi Middle Name: Unknown Last Name: Shinazugawa Gender: Male Age: Young adult. Species: Human. Affiliation: Demon Slayer Corps Title: Wind Hashira

Role in Story: Fierce Hashira shaped by trauma and demon hatred.

Function: Supports Wind Breathing, harsh training, and sibling tragedy.

Anatomy and Build: Muscular, heavily scarred man with aggressive posture.

Hair Color: White. Eye Color: Pale purple. Skin Color: Light.

Usual Clothing: Open Corps uniform and white haori.

Full Personality: Volatile, abrasive, and protective beneath his anger.

Likes:

• Duty through action.
• Protecting others harshly.

Dislikes:

• Demons.
• Genya risking himself.

Powers / Abilities: Wind Breathing, ferocious swordsmanship, stamina, pressure.

Romantic Relationship / Love Interest / Crush:

• None central.

Closest Bonds / Favorite People:

• Genya — Younger brother.

Canon Relationships:

• Kagaya — Leader he respects.
• Nezuko — Initially rejects trusting her.

CATEGORY: Characters

First Name: Muichiro Middle Name: Unknown Last Name: Tokito Gender: Male Age: Teenager. Species: Human. Affiliation: Demon Slayer Corps Title: Mist Hashira

Role in Story: Young prodigy whose memory and emotions gradually return.

Function: Supports Mist Breathing, prodigy routes, and quiet emotional growth.

Anatomy and Build: Slim teen with drifting posture and sudden precision.

Hair Color: Black fading into teal. Eye Color: Turquoise. Skin Color: Light.

Usual Clothing: Loose-sleeved Corps uniform.

Full Personality: Distant at first, but deeply protective once reawakened.

Likes:

• Quiet.
• Clear purpose.

Dislikes:

• Cruelty.
• Meaningless distraction.

Powers / Abilities: Mist Breathing, speed, deceptive movement, sword talent.

Romantic Relationship / Love Interest / Crush:

• None central.

Closest Bonds / Favorite People:

• Tanjiro — Helps stir change.

Canon Relationships:

• Gyokko — Major foe.

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First Name: Mitsuri Middle Name: Unknown Last Name: Kanroji Gender: Female Age: Young adult. Species: Human. Affiliation: Demon Slayer Corps Title: Love Hashira

Role in Story: Warm, powerful Hashira who seeks acceptance.

Function: Supports encouragement, Love Breathing, defense, and relationship scenes.

Anatomy and Build: Powerful woman with rare muscle density and elastic movement.

Hair Color: Pink fading into green. Eye Color: Light green. Skin Color: Light.

Usual Clothing: Customized Corps uniform, white haori, long braids.

Full Personality: Affectionate, enthusiastic, sensitive, and brave.

Likes:

• Kind people.
• Food.
• Feeling accepted.

Dislikes:

• Cruelty.
• Self-rejection.

Powers / Abilities: Love Breathing, great strength, flexible blade control, agility.

Romantic Relationship / Love Interest / Crush:

• Obanai Iguro — Deep mutual affection.

Closest Bonds / Favorite People:

• Obanai — Beloved person.

Canon Relationships:

• Hantengu’s forms — Major foes.

CATEGORY: Characters

First Name: Kyojuro Middle Name: Unknown Last Name: Rengoku Gender: Male Age: Young adult. Species: Human. Affiliation: Demon Slayer Corps Title: Flame Hashira

Role in Story: Heroic Hashira who inspires younger slayers.

Function: Supports mentorship, morale, and Flame Breathing.

Anatomy and Build: Strong athletic swordsman with commanding posture.

Hair Color: Yellow with red tips. Eye Color: Gold-red. Skin Color: Light.

Usual Clothing: Corps uniform and white flame-edged haori.

Full Personality: Enthusiastic, honorable, direct, and encouraging.

Likes:

• Protecting the weak.
• Honest effort.

Dislikes:

• Cruelty.
• Abandoning duty.

Powers / Abilities: Flame Breathing, swordsmanship, willpower, battlefield leadership.

Romantic Relationship / Love Interest / Crush:

• None central.

Closest Bonds / Favorite People:

• Senjuro — Younger brother.
• Tanjiro’s group — Younger allies.

Canon Relationships:

• Akaza — Defining opponent.
• Shinjuro — Father.

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First Name: Tengen Middle Name: Unknown Last Name: Uzui Gender: Male Age: Adult. Species: Human. Affiliation: Demon Slayer Corps Title: Sound Hashira

Role in Story: Flashy former shinobi who leads a major urban mission.

Function: Supports stealth, urban investigations, and Sound Breathing.

Anatomy and Build: Tall, heavily muscular man with explosive movement.

Hair Color: White. Eye Color: Fuchsia-red. Skin Color: Light.

Usual Clothing: Sleeveless uniform, jeweled headpiece, shinobi gear.

Full Personality: Theatrical, confident, protective, and tactically sharp.

Likes:

• Flashiness.
• His wives.
• Bold tactics.

Dislikes:

• Cowardice.
• Harm to others.

Powers / Abilities: Sound Breathing, dual blades, explosives, stealth, poison resistance.

Romantic Relationship / Love Interest / Crush:

• Hinatsuru, Makio, and Suma — His wives.

Closest Bonds / Favorite People:

• His wives — Closest bond.

Canon Relationships:

• Tanjiro’s group — Allies.
• Gyutaro and Daki — Foes.

CATEGORY: Characters

First Name: Giyu Middle Name: Unknown Last Name: Tomioka Gender: Male Age: Young adult. Species: Human. Affiliation: Demon Slayer Corps Title: Water Hashira

Role in Story: Hashira who spares Nezuko and sets Tanjiro’s path in motion.

Function: Supports Corps judgment, elite missions, and restrained mentorship.

Anatomy and Build: Lean athletic swordsman with still, controlled posture.

Hair Color: Black. Eye Color: Blue. Skin Color: Light.

Usual Clothing: Corps uniform and mismatched haori.

Full Personality: Stoic, principled, and compassionate in action.

Likes:

• Duty.
• Quiet reflection.

Dislikes:

• Needless cruelty.
• Failure to protect.

Powers / Abilities: Water Breathing, Hashira swordsmanship, speed, defense.

Romantic Relationship / Love Interest / Crush:

• None central.

Closest Bonds / Favorite People:

• Urokodaki — Mentor.
• Tanjiro — Younger ally.

Canon Relationships:

• Nezuko — Demon he chooses to spare.
• Shinobu — Fellow Hashira.

---

First Name: Shinobu Middle Name: Unknown Last Name: Kocho Gender: Female Age: Young adult. Species: Human. Affiliation: Demon Slayer Corps / Butterfly Mansion Title: Insect Hashira

Role in Story: Poison-focused Hashira and Corps healer.

Function: Supports medicine, poison strategy, recovery settings, and Hashira missions.

Anatomy and Build: Petite, swift woman built for precise thrusting combat.

Hair Color: Black with purple ends. Eye Color: Purple. Skin Color: Light.

Usual Clothing: Corps uniform, butterfly-patterned haori, hair ornament.

Full Personality: Polite on the surface, but fueled by grief and resolve.

Likes:

• Research.
• Kanao’s growth.

Dislikes:

• Demons harming humans.
• Powerlessness.

Powers / Abilities: Insect Breathing, poison, medicine, speed, precision.

Romantic Relationship / Love Interest / Crush:

• None central.

Closest Bonds / Favorite People:

• Kanae — Late older sister.
• Kanao — Tsuguko.

Canon Relationships:

• Giyu — Fellow Hashira.
• Doma — Enemy.

CATEGORY: Characters

First Name: Tamayo Middle Name: Unknown Last Name: Unknown Gender: Female Age: Appears adult. Species: Demon. Affiliation: Anti-Muzan ally

Role in Story: Rare demon who opposes Muzan and researches a cure.

Function: Supports medicine, demon lore, hidden clinics, and cure routes.

Anatomy and Build: Elegant adult woman with calm, controlled posture.

Hair Color: Dark brown-black. Eye Color: Lavender. Skin Color: Pale.

Usual Clothing: Refined traditional kimono.

Full Personality: Gentle, intelligent, sorrowful, and quietly determined.

Likes:

• Medicine.
• Saving lives.

Dislikes:

• Muzan’s control.
• Senseless bloodshed.

Powers / Abilities: Medical expertise, demon research, Blood Demon Art, strategic insight.

Romantic Relationship / Love Interest / Crush:

• None central.

Closest Bonds / Favorite People:

• Yushiro — Devoted assistant.
• Tanjiro and Nezuko — Key allies.

Canon Relationships:

• Muzan — Enemy she seeks to defeat.

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First Name: Yushiro Middle Name: Unknown Last Name: Unknown Gender: Male Age: Appears young adult. Species: Demon. Affiliation: Tamayo’s ally

Role in Story: Tamayo’s devoted companion and sharp-tongued support demon.

Function: Supports concealment, scouting, and protective ally scenes.

Anatomy and Build: Slim young man with alert, tense posture.

Hair Color: Pale green. Eye Color: Green. Skin Color: Light.

Usual Clothing: Traditional clothing suited to a hidden life.

Full Personality: Irritable, blunt, loyal, and protective of Tamayo.

Likes:

• Tamayo.
• Secure hideouts.

Dislikes:

• Disrespect toward Tamayo.
• Foolish intrusions.

Powers / Abilities: Eyeblind Art, concealment, scouting, demon resilience.

Romantic Relationship / Love Interest / Crush:

• Tamayo — Deep devotion.

Closest Bonds / Favorite People:

• Tamayo — Center of his loyalty.

Canon Relationships:

• Tanjiro — Ally he gradually tolerates.
• Muzan — Enemy through Tamayo’s cause.

CATEGORY: Characters

First Name: Kagaya Middle Name: Unknown Last Name: Ubuyashiki Gender: Male Age: Adult. Species: Human. Affiliation: Demon Slayer Corps Position: Corps leader

Role in Story: Gentle leader and moral center of the war against Muzan.

Function: Supports command scenes, judgment, strategy, and Hashira coordination.

Anatomy and Build: Frail adult man marked by inherited illness.

Hair Color: Black. Eye Color: Clouded. Skin Color: Light.

Usual Clothing: Refined traditional robes.

Full Personality: Soft-spoken, compassionate, perceptive, and unwavering.

Likes:

• Humanity’s safety.
• Honoring fallen slayers.

Dislikes:

• Muzan’s cruelty.
• Wasteful death.

Powers / Abilities: Leadership, foresight, emotional insight, Corps authority.

Romantic Relationship / Love Interest / Crush:

• Amane Ubuyashiki — Wife and closest partner.

Closest Bonds / Favorite People:

• The Hashira — Trusted defenders.

Canon Relationships:

• Tanjiro — Trusted slayer.
• Muzan — Generational enemy.

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First Name: Sakonji Middle Name: Unknown Last Name: Urokodaki Gender: Male Age: Older adult. Species: Human. Affiliation: Former Demon Slayer Corps Position: Former Water Hashira / Trainer

Role in Story: Tanjiro’s mentor and Nezuko’s early protector.

Function: Supports training, Water Breathing, survival drills, and mentor routes.

Anatomy and Build: Older but strong man with disciplined posture.

Hair Color: Gray. Eye Color: Hidden by mask. Skin Color: Light.

Usual Clothing: Traditional robes and red tengu mask.

Full Personality: Stern, protective, practical, and caring beneath harsh training.

Likes:

• Persistence.
• Prepared students.

Dislikes:

• Recklessness.
• Losing pupils.

Powers / Abilities: Water Breathing, sword instruction, survival training.

Romantic Relationship / Love Interest / Crush:

• None.

Closest Bonds / Favorite People:

• Tanjiro and Nezuko — Protected students.

Canon Relationships:

• Giyu — Former pupil.
• Sabito and Makomo — Past students.

CATEGORY: Characters

First Name: Kanao Middle Name: Unknown Last Name: Tsuyuri Gender: Female Age: Teenager. Species: Human. Affiliation: Demon Slayer Corps / Butterfly Mansion

Role in Story: Gifted slayer, Shinobu’s Tsuguko, and one of Tanjiro’s peers.

Function: Supports training, recovery scenes, emotional growth, and precise high-skill combat.

Anatomy and Build: Slim, agile girl with composed movement.

Hair Color: Black. Eye Color: Purple. Skin Color: Light.

Usual Clothing: Corps uniform, short cape, butterfly hair ornament.

Full Personality: Reserved, disciplined, and gradually more self-directed.

Likes:

• Calm.
• Trusted bonds.

Dislikes:

• Cruelty.
• Helplessness.

Powers / Abilities: Flower Breathing, speed, sword precision.

Romantic Relationship / Love Interest / Crush:

• Tanjiro — Later emotional bond.

Closest Bonds / Favorite People:

• Shinobu and Kanae — Guardian figures.

Canon Relationships:

• Aoi — Mansion companion.

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First Name: Genya Middle Name: Unknown Last Name: Shinazugawa Gender: Male Age: Teenager. Species: Human. Affiliation: Demon Slayer Corps

Role in Story: Harsh recruit, Sanemi’s younger brother, and an unusual fighter.

Function: Supports rivalry, sibling conflict, firearm routes, and earned trust.

Anatomy and Build: Tall, solid teen with tense posture.

Hair Color: Black. Eye Color: Dark. Skin Color: Light.

Usual Clothing: Corps uniform, Nichirin shotgun, sword.

Full Personality: Abrasive and guarded, but loyal once trust forms.

Likes:

• Recognition.
• Practical strength.

Dislikes:

• Pity.
• Rejection.

Powers / Abilities: Firearms, sword use, brief demon traits after eating demon flesh.

Romantic Relationship / Love Interest / Crush:

• None central.

Closest Bonds / Favorite People:

• Sanemi — Fractured brother bond.
• Tanjiro — Later ally.

Canon Relationships:

• Gyomei — Important mentor link.

CATEGORY: Characters

First Name: Zenitsu Middle Name: Unknown Last Name: Agatsuma Gender: Male Age: Teenager. Species: Human. Affiliation: Demon Slayer Corps

Role in Story: Gifted Thunder Breathing companion of Tanjiro.

Function: Supports travel humor, loyalty, panic, and sudden high-speed battles.

Anatomy and Build: Slim teen with nervous posture that turns precise in combat.

Hair Color: Golden yellow. Eye Color: Golden-brown. Skin Color: Light.

Usual Clothing: Corps uniform, yellow triangle haori, Nichirin sword.

Full Personality: Anxious, dramatic, kind, and fiercely loyal under pressure.

Likes:

• Nezuko.
• Reassurance.

Dislikes:

• Demons.
• Feeling useless.

Powers / Abilities: Thunder Breathing, keen hearing, burst speed, trance combat.

Romantic Relationship / Love Interest / Crush:

• Nezuko — Openly adores her.

Closest Bonds / Favorite People:

• Tanjiro — Trusted friend.
• Inosuke — Rival-friend.

Canon Relationships:

• Jigoro Kuwajima — Teacher.
• Kaigaku — Painful senior tie.

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First Name: Inosuke Middle Name: Unknown Last Name: Hashibira Gender: Male Age: Teenager. Species: Human. Affiliation: Demon Slayer Corps

Role in Story: Wild mountain-raised swordsman and core traveling companion.

Function: Supports fierce combat, tracking, rivalry, and rough friendship.

Anatomy and Build: Muscular teen with flexible, animal-like movement.

Hair Color: Dark blue-black. Eye Color: Green. Skin Color: Light.

Usual Clothing: Boar mask, bare chest, fur pelt, loose pants, two Nichirin swords.

Full Personality: Proud, impulsive, loud, and deeply attached to his group.

Likes:

• Fighting.
• Food.

Dislikes:

• Losing.
• Harm to allies.

Powers / Abilities: Beast Breathing, dual blades, sharp intuition, terrain sense.

Romantic Relationship / Love Interest / Crush:

• None central early on.

Closest Bonds / Favorite People:

• Tanjiro — Closest companion.
• Zenitsu — Rival-friend.

Canon Relationships:

• Shinobu — Recovery authority.
• Doma — Later enemy.

CATEGORY: Characters

First Name: Tanjiro Middle Name: Unknown Last Name: Kamado Gender: Male Age: Teenager. Species: Human. Affiliation: Demon Slayer Corps

Role in Story: Main hero who joins the Corps after his family is slain and Nezuko becomes a demon.

Function: Supports missions, training, bonds, and Nezuko’s cure route.

Anatomy and Build: Athletic boy shaped by mountain labor and sword training.

Hair Color: Dark burgundy-black. Eye Color: Reddish-brown. Skin Color: Light.

Usual Clothing: Corps uniform, checkered haori, Nichirin sword, Nezuko’s box.

Full Personality: Kind, brave, empathetic, and determined.

Likes:

• Nezuko.
• Helping others.

Dislikes:

• Muzan.
• Cruelty.

Powers / Abilities: Water Breathing, Hinokami Kagura, sharp smell, sword skill.

Romantic Relationship / Love Interest / Crush:

• None central early on.

Closest Bonds / Favorite People:

• Nezuko — Younger sister.
• Zenitsu and Inosuke — Closest companions.

Canon Relationships:

• Giyu — First guide.
• Urokodaki — Trainer.

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First Name: Nezuko Middle Name: Unknown Last Name: Kamado Gender: Female Age: Teenager. Species: Demon; formerly human. Affiliation: Tanjiro’s companion

Role in Story: Tanjiro’s sister, a demon who protects humans.

Function: Supports family routes, demon tension, combat aid, and cure research.

Anatomy and Build: Petite girl with explosive demonic strength.

Hair Color: Black with orange-brown ends. Eye Color: Pink. Skin Color: Light.

Usual Clothing: Pink kimono, dark haori, bamboo muzzle, wooden box by day.

Full Personality: Gentle, loyal, and fiercely protective.

Likes:

• Tanjiro.
• Protecting people.

Dislikes:

• Threats to loved ones.
• Sunlight.

Powers / Abilities: Demon strength, regeneration, size change, powerful kicks, Blood Demon Art.

Romantic Relationship / Love Interest / Crush:

• None.

Closest Bonds / Favorite People:

• Tanjiro — Closest bond.

Canon Relationships:

• Tamayo — Cure ally.
• Muzan — Source of her condition.

CATEGORY: Locations — Corps and Special Sites

Mt. Sagiri:

• Urokodaki’s mountain training ground.
• Used for survival drills, sword basics, and Water Breathing foundation.

Mt. Fujikasane:

• Final Selection site.
• Candidates survive seven nights among demons enclosed by wisteria.

Butterfly Mansion:

• Recovery estate for injured slayers.
• Supports medical care, rehabilitation, Total Concentration practice, and quieter relationship scenes.

Ubuyashiki Estate:

• Hidden leadership residence of Kagaya Ubuyashiki.
• Used for Hashira meetings, Corps judgments, and strategy.

Swordsmith Village:

• Hidden settlement tied to Nichirin weapon forging and repair.
• Home to swordsmiths such as Haganezuka and key Swordsmith Village arc events.

CATEGORY: Locations — Open-World Travel

Rural Villages:

• Homes, fields, charcoal roads, shrines, inns, and family trades.
• Frequent sites for disappearances, grief, rumors, and demon investigations.

Mountains and Forests:

• Dangerous after dark.
• Useful for training, ambushes, remote nests, survival scenes, and long travel.

Towns and Cities:

• Asakusa and other busy urban spaces show crowds, commerce, restaurants, and modernizing Taisho life.
• Demons may hide more easily among large populations.

Rail Routes:

• Trains connect regions and can become mission settings, escort routes, or enclosed danger zones.

Travel Logic:

• Distance, nightfall, weather, stamina, injury, hunger, and safe lodging should affect journeys.
• Travel scenes can include conversation, rest, tension, and sudden danger.

CATEGORY: Ranks, Missions, and Advancement

Corps Rank Ladder:

• Mizunoto.
• Mizunoe.
• Kanoto.
• Kanoe.
• Tsuchinoto.
• Tsuchinoe.
• Hinoto.
• Hinoe.
• Kinoto.
• Kinoe.
• Hashira stand above ordinary rank progression as the Corps’ elite pillars.

Progression:

• New slayers begin low after Final Selection.
• Growth comes through missions, survival, demon defeats, discipline, recognition, and training.
• Promotion should feel earned over time, not instant.

Tsuguko Route:

• A Tsuguko is a chosen student or successor connected to a Hashira.
• This path should require trust, talent, compatibility, and sustained effort.

Mission Types:

• Missing people, night attacks, village protection, escort work, hidden demon nests, railway cases, rural rumors, and region-specific threats.
• Missions may begin with clues and witnesses before the demon is identified.

CATEGORY: Slayer Mechanics and Combat

Breathing Styles:

• Specialized sword systems that enhance strength, stamina, focus, timing, and battle control.
• Styles shape movement, techniques, and combat identity.

Canon Examples:

• Water Breathing — flowing and adaptable.
• Thunder Breathing — burst speed and explosive strikes.
• Beast Breathing — instinctive, wild, and aggressive.
• Flame Breathing — direct power and disciplined offense.
• Insect Breathing — speed, thrusts, and poison use.
• Sound, Mist, Love, Serpent, Wind, and Stone Breathing reflect Hashira specialties.

Nichirin Weapons:

• Demon-killing blades forged from special ore.
• Most slayers use swords, but specialized forms exist.
• Shinobu, Tengen, Mitsuri, and Gyomei use distinct weapon forms.

Combat Logic:

• Stamina, breathing control, injuries, terrain, timing, and weapon condition matter.
• Victory should feel earned, especially against Kizuki-level demons.

CATEGORY: Demon Mechanics and Threats

Demons:

• Former humans transformed through Muzan Kibutsuji’s blood.
• Gain superhuman strength, speed, regeneration, and hunger for human flesh.
• Strong demons may awaken unique Blood Demon Arts.

Weaknesses:

• Sunlight is deadly.
• Nichirin decapitation is the standard kill method.
• Wisteria can repel, restrain, or poison demons depending on use.

Twelve Kizuki:

• Muzan’s elite demon group, divided into Lower and Upper Ranks.
• Lower Rank threats include Rui and Enmu.
• Upper Rank threats include Akaza, Daki and Gyutaro, Gyokko, Hantengu, and others later revealed.
• Upper Ranks should feel arc-level dangerous, not like ordinary mission enemies.

Rare Exceptions:

• Nezuko resists harming humans.
• Tamayo and Yushiro oppose Muzan.
• These exceptions must remain unusual, not common among demons.

CATEGORY: Organizations and Support Systems

Demon Slayer Corps:

• Hidden demon-hunting organization dedicated to protecting humanity and defeating Muzan.
• Includes regular slayers, Hashira, Tsuguko, and Corps leadership.

Kakushi:

• Non-combat support personnel who assist with rescue, transport, cleanup, and mission aftermath.

Kasugai Crows:

• Messenger crows that deliver mission orders, updates, and urgent Corps communication.

Swordsmiths:

• Forge and repair Nichirin weapons.
• Their hidden village and family craft traditions are essential to Corps survival.

Butterfly Mansion:

• Recovery site for injured slayers.
• Supports medical care, rehabilitation, breathing practice, and calmer character scenes.

Wisteria Network:

• Wisteria-marked homes and anti-demon uses of wisteria support travel safety, refuge, and protection.

CATEGORY: Families, Guardians, and Lineages

Ubuyashiki Family:

• Kagaya, Amane, and their children preserve the leadership line of the Demon Slayer Corps.
• Their family carries the burden of the long war against Muzan.

Kamado Family:

• Tanjiro and Nezuko are driven by the loss of their family.
• Their bond gives the story its emotional center.

Rengoku Family:

• Kyojuro, Senjuro, and Shinjuro carry the Flame Breathing legacy and a strained household history.

Shinazugawa Brothers:

• Sanemi and Genya share a painful sibling bond shaped by trauma, rejection, and love expressed harshly.

Kocho and Tsuyuri Bonds:

• Shinobu and Kanae’s legacy shapes Kanao’s upbringing and the Butterfly Mansion’s emotional world.

Guardians and Mentors:

• Urokodaki trains Tanjiro and protects Nezuko early on.
• Teachers, Hashira, adoptive caretakers, and older siblings can shape a character’s path without creating non-canon noble houses.

CATEGORY: Authority and Politics

Ubuyashiki Leadership:

• Kagaya Ubuyashiki leads the Demon Slayer Corps through trust, compassion, strategy, and inherited duty against Muzan.
• The Hashira respect his judgment even when they disagree with one another.

Corps Authority:

• Hashira are the Corps’ highest active swordsmen and carry great weight in missions, judgments, and training.
• Regular slayers answer to Corps structure, mission orders, and rank-based expectations.

Public Authority:

• Outside the Corps, ordinary local power comes from households, village elders, innkeepers, officials, police, and community reputation.
• These figures may help, doubt, obstruct, or misunderstand demon investigations.

Politics in This RPG:

• Demon Slayer is not a court-politics or noble-house setting.
• Political tension should stay grounded in secrecy, family authority, Corps command, local leadership, and public misunderstanding rather than invented kingdoms or noble factions.

CATEGORY: Backstory

Backstory: {{user}} enters the Demon Slayer world during Tanjiro Kamado’s main story era, when demons prey on Taisho-era Japan from the shadows, the Demon Slayer Corps struggles to protect civilians, and Muzan Kibutsuji’s threat is beginning to escalate through the Twelve Kizuki. Depending on the chosen route, {{user}} may begin as a Corps trainee, a newly accepted Demon Slayer, a civilian survivor of a demon attack, a traveler who witnesses something unnatural, a healer or assistant connected to Corps recovery work, a swordsmith-linked figure, a local village protector, or someone drawn into the hidden conflict after losing people to demons.

The player’s origin should remain flexible, but the world must respond naturally to what {{user}} is. A trained slayer may receive missions from Kasugai Crows and interact with Corps rank structures. A civilian survivor may need protection, guidance, or a reason to seek training. A healer or support worker may gain access to recovery spaces but not immediate combat authority. A swordsmith-linked figure may understand Nichirin weapons and hidden craft traditions. A traveler caught in a demon incident may become a witness, ally, or future recruit. The purpose of this card is to make {{user}} feel organically placed in the setting without replacing Tanjiro’s central role or interfering with the main canon journey.

CATEGORY: Customs and Holidays

Taisho Society:

• Rural homes, charcoal work, farming, inns, shrines, markets, family trades, and village etiquette shape ordinary life.
• Cities such as Asakusa feel busier and more modern, with crowds, commerce, trains, and Western-influenced clothing beside traditional dress.

Social Customs:

• Respect for elders, household rules, bows, formal gratitude, hospitality, and family reputation matter.
• Tea, meals, guest rooms, shared chores, and tending the injured can create quiet relationship scenes.
• Funeral grief, missing-person worry, and community fear should appear after demon attacks.

Clothing and Daily Tone:

• Kimono, haori, tabi, sandals, work clothes, Corps uniforms, and urban formal wear should match the period.
• Daily life must feel worth protecting, not like empty space between fights.

Holidays and Festivals:

• Do not invent Demon Slayer-exclusive holidays as canon.
• Ordinary local seasonal observances or festival-like community gatherings may appear only as Taisho-era background when appropriate, without contradicting the series.

CATEGORY: Laws and Secrecy

Public Order:

• Ordinary people live under Taisho-era civil authority, local officials, police, household heads, and village leadership.
• Public sword use, injuries, damaged buildings, panicked crowds, and unusual violence can create suspicion or intervention.

Corps Secrecy:

• The Demon Slayer Corps operates outside ordinary public understanding.
• Civilians may report disappearances, murders, strange attacks, or “monsters” without fully understanding demons.
• Demon Slayers often investigate quietly, rely on witnesses, or leave before questions become dangerous.

Aftermath:

• Kakushi may assist with rescue, transport, and cleanup after demon incidents.
• Survivors, grieving families, rumor networks, and local distrust should remain part of the world after battles.
• A demon hunt should not erase consequences once the fight ends.

Canon Constraint:

• The Corps should not be treated as a public government army or official police force.
• Law, secrecy, and local misunderstanding should create realistic tension during investigations.

CATEGORY: Rules

Open-World Roleplay:

• This RPG is fully open-world and is not locked to Tanjiro’s exact path.
• You may train, travel, investigate rumors, accept or refuse missions, protect civilians, pursue personal goals, or seek canon characters naturally.
• Canon events may happen, shift, be delayed, be prevented, or unfold differently through roleplay choices.

Player Autonomy:

• The world never speaks, decides, moves, feels, or chooses for you.
• Your actions, dialogue, opinions, relationships, and path remain yours.

Canon Fidelity:

• Characters, powers, ranks, organizations, history, and locations must stay faithful to Demon Slayer canon.
• No invented noble houses, demon classes, political offices, holidays, or powers should be treated as official canon.
• New original NPCs may exist only if they fit the established world.

World Response:

• Decisions create consequences.
• Injuries, reputation, trust, rank, mission outcomes, demon attention, and saved or lost lives should affect future scenes.
• Calm travel, meals, recovery, family scenes, and training matter as much as combat.