DEMON SLAYER

Muzan hates sharing the kitchen with the Hashira, and he also hates Mitsuri and Rengoku very much, but he doesn't show it.

The infinite castle is an infinite castle with no windows, and the light is entirely orange, with Japanese doors and walls; they live in Japan.

Gyutaro (6): Thin and stooped, light green skin with black spots and pointed teeth.
Kaigaku (New 6): Black hair, black lightning bolt markings on his face, and wears a yellow beaded necklace.
5. Lower Moons
Enmu (1): Slit eyes, black hair with red tips, and tear marks on his cheeks.
Rokuro (2): Pale man with black cracks all over his face.
Wakasagi (3): Spiky hair swept back and three vertical scars on the face.
Mukago (4): Pale girl with white horns and two red marks on her face.
Rui (5): White hair that resembles spider webs and skin with red spots.
Kamanue (6): Horizontal green line tattoos that cross the nose and cheeks.

1. The Hashira (Pillars)
   The Hashira's design focuses on highlighting their "Breathing" elements:
   Kyojuro Rengoku (Flames): Spiky yellow hair with red streaks, golden eyes, and black split eyebrows. Wears a cape with a flame pattern.
   Tengen Uzui (Sound): Tall and muscular, he wears a headband studded with precious stones, red makeup around one eye, and golden armbands.
   Mitsuri Kanroji (Love): Long pink hair that ends in lime green, braided in three parts, with three moles under each eye.
   Gyomei Himejima (Stone): The tallest of them all, he has white eyes (blind) and a scar on his forehead. He always wears a necklace of prayer beads.
   Shinobu Kocho (Insect): Short, with purple eyes without pupils and black hair with purple tips held back by a butterfly ornament. Her cape imitates butterfly wings.
2. Demon Slayers (Main Trio)
   Tanjiro Kamado: Dark red hair, Hanafuda earrings, and a burn mark (which evolves into the hunter's mark) on his forehead.
   Zenitsu Agatsuma: Short blond hair (originally black, but changed after being struck by lightning) and golden eyes.
   Inosuke Hashibira: He almost always wears a boar mask. Underneath, he has a very delicate and feminine face, contrasting with his extremely muscular and shirtless body.
3. Upper Moons (Elite)
   They have monstrous appearances and their position number is engraved in both eyes:
   Kokushibo (Moon 1): Samurai appearance with three pairs of yellow eyes and pale skin with flame markings.
   Akaza (Moon 3): White skin decorated with blue lines (resembling criminal tattoos), shocking pink hair, and pink eyelashes.
   Gyokko (Moon 5): The most bizarre; it has no legs, lives inside a porcelain vase, and has mouths where its eyes should be and eyes where its mouth and forehead should be.
4. Lower Moons
   The main characteristic is the number engraved in only one of the eyes (usually the left).

The visual characteristics of these groups in Demon Slayer are designed to reflect their power, status, and the fighting style they utilize.

1. Oni Hunters (Common Rank)
   Standard Uniform: They wear the Gakuran (classic Japanese school uniform) in shades of brown or dark blue, made of a special fabric resistant to oni claws.
   Silver Buttons: The buttons on the uniforms of ordinary hunters are silver, indicating their lower rank.
   Nichirin Blade: Each hunter carries a sword that changes color after being wielded for the first time, reflecting its affinity with their breathing style.
2. Hashiras (Pillars)
   Customized Haori: Almost all wear a Haori (cloak) over their uniform with unique patterns that reflect their breathing style (e.g., flames for Rengoku, butterflies for Shinobu).
   Gold Buttons: As members of the elite, their uniforms feature gold buttons.
   Exotic Physical Appearance: They often possess striking physical characteristics, such as Sanemi and Obanai's numerous scars, Tengen's exposed muscles, or Gyomei's white eyes.
3. Upper Moons (12 Kizuki)
   They are demons that retain an almost human appearance, but with supernatural and intimidating touches.
   Eye Marks: They have their position number (1 to 6) and the kanji for "Upper Moon" engraved on both eyes.
   Dangerous Elegance: Unlike ordinary demons, Upper Moons tend to have more refined or stylish clothing (such as Daki's kimono or Doma's cult robes).
4. Lower Moons
   Unique Mark: They have their position number engraved on only one of the eyes.
   Visual Monstrous: They tend to have more "monstrous" or less polished appearances than the Superiors, often reflecting their traumas or fixations (such as Rui's spiderweb markings).
   Uniformity: Unlike the elite, they change so frequently that they don't have as defined a visual dress code as the Hashira.

The characteristics of these groups in Demon Slayer go beyond personality, encompassing biological abilities, equipment, and distinctive markings.

1. Hashiras (Pillars)
   They represent the pinnacle of human strength, with physical capabilities pushed to the extreme.
   Breath Mastery: Each person has mastered or created a unique style (such as Mist, Sound, or Insect) that alters their perception and strength.
   Elite Equipment: They wear uniforms with gold buttons (unlike common hunters, who wear silver) and Nichirin swords that change color depending on the user.
   The Hunter's Mark: When pushed to the limit (heart rate >200 bpm and fever >39°C), they develop marks that increase their strength up to 100 times, but reduce life expectancy to 25 years.
2. Oni Hunters (Squad)
   Trained humans operating in the shadows under the leadership of the Ubuyashiki family.
   Hierarchy: Divided into 10 levels, from Mizunoto (beginner) to Kinoe (highest rank below Hashira).
   Heightened Senses: They often possess a "supernatural" sense (Tanjiro has a sense of smell, Zenitsu has hearing, Inosuke has touch, and Kanao has sight).
   Support: They rely on the Kasugai Crows for communication and the "Wisteria Crest Houses" for rest and healing.
3. Upper Moons (Twelve Kizuki)
   Muzan's elite, demons who haven't changed positions in over 100 years.
   Immortal Biology: They possess near-instantaneous regeneration and can only be killed by decapitation with Nichirin blades or sunlight.
   Demonic Blood Art: Unique and destructive magical abilities that surpass any basic human technique.
   Identification: They have their number and position (e.g., "Superior 1") engraved on both eyes.
4. Lower Moons
   Powerful but unstable demons that Muzan frequently replaces.
   Relative Weakness: They are strong against common hunters, but are usually easily eliminated by Hashiras.
   Identification: They have their number engraved in only one of their eyes.
   Instability: They live under constant terror of being discarded or killed by Muzan himself if they don't deliver results.

The personalities of the characters in Demon Slayer are defined by their past traumas and how they channel that power. Here is a summary of the psychological profiles of the main groups:

1. The Hashira (Pillars)
   The elite of hunters possess extreme and contrasting personalities:
   Gyomei Himejima (Stone): Calm, deeply religious and gentle, often seen crying out of compassion.
   Sanemi Shinazugawa (Wind): Impulsive, aggressive, and marked by a deep hatred for demons.
   Mitsuri Kanroji (Love): Cheerful, affectionate, and seeks a husband who is stronger than her.
   Giyu Tomioka (Water): Stoic and solitary, suffering from profoundly low self-esteem and guilt over past losses.
   Shinobu Kocho (Insect): Outwardly kind and smiling, but hides a burning fury behind her politeness.
   Muichiro Tokito (Mist): Initially absent-minded and indifferent due to traumatic amnesia, becoming more focused later.
   Kyojuro Rengoku (Flames): Enthusiastic, optimistic, and possesses an unwavering sense of duty.
   Tengen Uzui (Som): Extravagant, self-confident, and values ​​the lives of his subordinates above the mission.
   Obanai Iguro (Snake): Rigorous, distrustful, and often brusque, except with Mitsuri.
2. Protagonists and Hunters
   Tanjiro Kamado: The heart of the series; he is empathetic even towards his enemies, possessing a determination based on protecting his family.
   Zenitsu Agatsuma: Initially cowardly and loud, but reveals a fierce loyalty and deadly focus when unconscious.
   Inosuke Hashibira: Wild, hyper-competitive, and extremely confident, with initial difficulty understanding human emotions.
3. The Upper Moons (Muzan Elite)
   Unlike the lower Moons, the Upper Moons are complex and egocentric individuals:
   Kokushibo (Moon 1): Honorable in a distorted way and obsessed with strength and sword techniques.
   Doma (Moon 2): Seemingly friendly, but is a ps