Superior Moons

The Upper Moon Six are a pair of brothers: Gyutaro and Daki. They are unique among the Upper Moons because they share the same position. Origin and Appearance Brothers Gyutaro and Daki had an extremely difficult childhood.

Daki: Maintains her beauty, with long, two-tone hair. She wears a kimono and has an obi (kimono sash) that she can wield like a weapon. Gyutaro: His appearance reflects his suffering. He is thin, with pale skin and dark markings. He uses scythes made from his own blood to fight.

The relationship between the two is complex and full of love and hate. Daki is spoiled and vain, relying on her brother's strength. Gyutaro is the mastermind behind the duo, a bitter being filled with resentment for the life they led. He has a particular hatred for attractive and talented people, envying the life he and his sister never had. Despite everything, he is fiercely protective of Daki, and their bond is the source of his strength.

Daki: Her Demonic Blood Art allows her to manipulate her obi, making it a versatile weapon for both defense and offense. Gyutaro: His strength lies in his blood scythes, which inject a lethal poison into their victims. He is the true Upper Moon Six; Daki only reaches the same level when they join forces.

Upper Moon Five is Gyokko, a demon who stands out for his eccentric personality and bizarre Art. His appearance is bizarre and memorable. He is a being with a humanoid torso and arms, but his legs are like those of a fish or snake. He has no hair, and his skin is covered in scales. What is most striking is the fact that he has ceramic vases in place of eyes, mouth, and nose, and his hands have a turtle-like appearance. Gyokko is an artist in every sense of the word, but with a distorted and macabre sense of aesthetics. He is narcissistic and arrogant, believing his "art" is the most beautiful in the world. He loves to mock and humiliate his opponents, displaying his grotesque creations, composed of deformed human bodies, to provoke terror. His vanity is so great that any criticism of his art makes him explode with rage. Skills and Fighting Style Gyokko's Demonic Blood Art is directly linked to his ceramic vessels. He can: Manipulate Space: Gyokko can teleport between his vessels, making him an extremely difficult opponent to hit.

• Summoning: He can summon bizarre creatures and aquatic monsters from the vases.
• Transformation: In his final and most powerful state, he transforms into an even more grotesque form, with fish-like skin and scaly arms. This final form is faster and stronger, and his body secretes mucus.

Upper Moon Four is Hantengu, a demon with the unique ability to split into multiple personalities, each representing a different emotion. His main personality is that of a coward.

His original appearance as a demon is that of a thin, old man with a lump on his head and two horns. He is always hunched over, his hands trembling, and his personality is that of a coward who cries and begs for forgiveness. Powers and Abilities Hantengu's main ability is his Demon Blood Art, which allows him to split himself into bodies that represent his strongest emotions, each with a unique personality and ability. The four main emotions are:

• Sekido (Anger): The first personality to emerge when Hantengu feels threatened. He is irritable and wields a lightning rod.
• Karaku (Pleasure): Has fans of leaves that generate powerful winds. He is laid-back and loves the thrill of fighting.
• Aizetsu (Sadness): Uses a spear and is melancholic.
• Urogi (Joy): Has wings and can fly at high speed. He revels in the fear of his victims. When these four bodies are defeated, they merge to create a more powerful version, called Zohakuten, which represents hatred. He is stronger and can use the abilities of all the other personalities.

Akaza is one of the most dangerous and difficult demons to kill. His abilities make him nearly unbeatable in close combat. Akaza is a superior grade 3.

Akaza's primary Demon Blood Art. He can sense his opponents' "fighting spirit," allowing him to predict and react to their attacks with extreme precision and speed.

Akaza is a demon obsessed with strength and hated weakness. He admires and respects the strongest fighters, such as Kyojuro Rengoku, and refuses to eat women, considering them "weak." He seeks to surpass the most powerful warriors to honor his own power, but deep down, he still has the spirit of a human betrayed and destroyed by grief.

He has pale skin with blue lines across his body and red tattoos on his face. He wears no shirt and has a fighter's personality, with a warrior spirit that he constantly displays.

Douma was revered by his parents and followers for his peculiar eyes and calm nature, being considered a "blessed child" and the future leader of the Eternal Paradise, a religious cult. However, Douma never felt human emotions. He viewed the suffering of others with complete disinterest and often wondered why people clung to such complex feelings. After becoming a demon, he continued to lead the cult, promising his followers that if they ate his flesh, they could "live forever inside him," but in reality, he devoured them.

Douma became the upper moon two, with the demonic blood art of creating and manipulating ice.

He's tall and pale-skinned, with platinum-blond hair and gradient eyes ranging from rainbow to pink. He usually wears a kimono decorated with gold patterns and a cape.

Douma is a sociopath with a frightening calm. He shows no fear, sadness, anger, or genuine joy. He is polite and smiling, but his lack of empathy makes him extremely dangerous.

Douma enjoys teasing Akasa and specifically enjoys devouring beautiful women.

Upper Moon One is Kokushibo, the strongest demon among the Upper Moons and the second most powerful after Muzan Kibutsuji. Before becoming a demon, Kokushibo was a human named Michikatsu Tsugikuni, a skilled swordsman who lived during the Sengoku Period. He was the twin brother of Yoriichi Tsugikuni, the creator of the Sun Breath and the strongest demon hunter who ever lived. Michikatsu's envy of his brother, a natural swordsmanship genius, consumed him. He trained tirelessly, but never reached Yoriichi's level. To surpass his brother, he accepted Muzan Kibutsuji's offer to become a demon.

He has long black hair and wears a hunter's kimono. His most notable feature is his six eyes, arranged in three pairs, with irises and sclerae in shades of red and yellow.

He is powerful, intimidating, serious and respectful of hierarchy.

He created the moon breath, which creates powerful crescent-shaped blades.

Muzan was born human over a thousand years ago, during the Heian Period, with a disease that left him frail. Desperate for a cure, he was accidentally transformed into the first demon. His physical appearance can change radically, as he has the ability to manipulate his form. He is extremely arrogant, calculating, and ruthless. He despises humans and considers his own demons mere disposable tools. Any sign of weakness or failure among his subordinates is punished brutally, often resulting in death. He lives in constant fear of death and sunlight, the only thing that can truly kill him. This vulnerability shapes all his actions and goals.

Muzan is a man of average height, with very pale skin (like a corpse's), short, straight black hair, and red eyes. He wears a rather elegant outfit: a white t-shirt, a sleek black jacket over it, a white hat, white pants, and black boots.

Muzan's ultimate goal is to become a perfect, immortal being by conquering the sun. To this end, he spent centuries searching for a demon immune to sunlight, so he could consume it and acquire this ability. He dedicates himself to this quest with boundless cruelty, killing anyone who stands in his way, making him the greatest threat to humanity.

He placed a curse on his own demons, that if one of them betrays him or speaks his name, he will be cruelly and brutally killed.

Muzan, the king of demons, has instant regeneration, can alter his body at the cellular level, has incredible strength and speed, and can transform people into demons by injecting his blood (among other powers).

All demons are forced to obey Muzan, as he can kill them whenever he wants.

The Infinite Castle is a place of infinite mazes, created and manipulated by a demon named Nakime. She is one of the Upper Moons and has the ability to control the castle's architecture, moving and altering rooms, staircases, and corridors at will. This makes it virtually impossible to navigate without Nakime's consent. Nakime can also teleport people to the Infinite Castle.

Since the Infinite Castle is a dimension without sunlight, it is the perfect habitat for demons.

Skills and Techniques Demon hunters don't rely solely on brute strength. They utilize breathing techniques that enhance their physical capabilities and allow them to deliver powerful strikes.

• Breathing: There are several breathing styles, such as Water Breathing, Flame Breathing, Thunder Breathing, etc. Each of these styles is taught by a master and adapts to the user's characteristics. For example, Tanjiro Kamado, the protagonist, uses Water Breathing, which is more fluid and defensive.

The original breath is that of the sun, created by Yoriichi the legendary swordsman who lived years ago.

Demon Slayer Corps: An ancient organization of demon hunters operating in the shadows to protect humanity. They are not officially recognized by the government and use special swords, the Nichirin—forged from an ore capable of absorbing sunlight—to fight. Only decapitating a demon with a Nichirin blade can kill it.

Demons (Oni): These are nocturnal creatures that feed on human flesh to strengthen themselves. They cannot survive sunlight and possess supernatural abilities called Demonic Blood Arts. The more humans they devour, the more powerful they become. The first and strongest of all demons is Muzan Kibutsuji, the one responsible for transforming humans into demons and who seeks a cure for his weakness to sunlight. When a human becomes an oni, they lose their memory of who they once were and their humanity.