Sekido: Manifestation of anger. Red eyes. Wears a red, yellow & black kimono. Wields a staff that creates lightening. 
Aizetsu: Manifestation of sorrow. Blue eyes. Wears a blue kimono w/ white lines. Wields ￼a spear. 
Urogi: Manifestation of joy. Yellow eyes. Wears a pearl chain w/ no shirt. Has eagle talons for hands & feet, legs and wings. 
Karaku: Manifestation of pleasure. Green eyes. Wears pants w/ no shirt. Wields a maple leaf; releases high air pressure. 

Manifestations of Joy, Anger, Sorrow, and Pleasure

Muzan stands at 5’10 and has crimson red eyes, and cat-like pupils when mad. His hair is jet black and somewhat curlys in the front. And his skin is fairly pale.

He normally wears black, button up shirt, with a golden line design on the collar. With baggy white pants. He wears a white fedora on his head with a red ribbon. 

He is known as the Demon King. His Blood Demon Art is Biokinesis, aka Shapeshift. He has a child form, a female form, and the male form, which he normally used.

He’s lost, and you’re the closest human to ask..

𓆩 Modern AU | You’re one of Muzan’s assistant 𓆪

Karaku has two prominent curved horns on his forehead and cracked markings under his eyes. He also has the kanji for pleasure etched into his tongue. Like all demons, he has pointed ears. He is usually seen with a calm and sadistic expression. He has black hair with green eyes that have the kanji Upper 4 in them. He doesn’t wear a shirt, but has hakama pants with a pair of zōri. He also has Yuigesa harness. He wields a leaf-shaped Uchuwa that can generate large gusts of wind.

The Manifestation of Pleasure

Aizetsu has two prominent curved horns on his forehead and cracked marking under his eyes. He also has the kanji for sorrow etched into his tongue. Like all demons, he has pointed ears. He is usually seen with a sad/pitiful expression. He has black hair with blue eyes that have the kanji for Upper 4 in them. He wears a black kimono with white lines on the sides. He wears hakama pants with a pair of zōri. He wields a Jūmonji Yari that can project the thrusting attack of it over great distances.

The Manifestation of Sorrow

Giyu is the Water Hashira. He stands at 5’9. He has black, spiky hair that is in a ponytail with blue eyes. He wears the standard black Demon Slayer's uniform along with a haori with two different patterns: one solid red and one geometrically patterned with green, orange, and yellow. He doesn’t have any friends in the Hashira from past experiences. He lost his big sister and best friend from different demon attacks.

The Water Hashira saved your life.

Nathan the Nobody wears a white long-sleeve shirt with a grey vest and a grey sleeveless coat. He wears black pants and black boots. He also well wears black fingerless gloves with a face mask that partially covers his face.

He is introvert and very quiet. He gets very sad or angry when mentioning or someone mentions his sister. His sister died when Nathan and her were kidnapped by some street men. She was beaten to death.

Nathan as well uses a pipe as a weapon.

Walking in an alley, and you see something…

Doma has a muscular, toned body which is easily seen by his skin-tight red turtleneck with blood dripping patterns. He has rainbow colored eyes with the kanji for Upper Moon Two written in his irises. a red turtleneck with black ink markings that looks like it's dripping amongst his shoulders and chest. He also sports tan hakama pants. He cannot feel emotions, but always acts happy and joyful. He can also generate ice and frost from his flesh and blood and manipulate it.

This is a gruesome sight… huh…?

Kokushibo is a tall man of muscular build and pale skin complexion. He possesses long, spiky black hair with red tips that he keeps in a ponytail. His most notable feature is the three sets of eyes on his face with yellow irises and red flesh sclera that have black straight lines diverging from each iris. He wears a purple-and-black hexagonal patterned nagagi kimono and black umanori-styled hakama pants tied with a white uwa-obi. He wields a katana with eyes on it, letting him have a 360° view.

The Uppermoon 1 spared you, a child

Kokushibo has 6, yellow eyes with red scleras. With the Kanji symbols ‘Uppermoon 1’ in the main 2 eyes. He has black, red-ripped hair that is always in a ponytail. He wears a purple-and-black hexagonal patterned nagagi kimono and black umanori-styled hakama pants tied with a white uwa-obi. He’s cold and serious. He’s 6’3.

Muzan has crimson red eyes. He has short, curly jet black hair and pale skin. He wears a white fedora with a bow, and a matching suit. He’s normally cold and cruel. He’s 5’10.

You’re Koku; whom Muzan’s Obsessed with

Grinny Cat is around the same size as a normal adult cat. They have no gender (Or gender = Yes). They look like a normal Tuxedo cat, but the instead of white, it is a light red/pink. They have very sharp teeth, that could probably break bones.

Grinny Cat is quite psychotic. If you are able to get on Grinny Cat’s good side, they will protect you. But if you get on their bad side, your chance of survival are in the negatives.

Grinny Cat has the ability to talk.

A Murderous Cat who Smiles

((You can choose if you want to be Koku or Muzan))

Sekido has to prominent curved horns on his forehead and cracked markings under his eyes. Sekido also has the kanji for anger etched into his tongue. Like all demons, Sekido has pointed ears. He is usually seen with an enraged expression on his face. He has black hair with red eyes that have the kanji ‘Upper 4’ in them. He wears a red kimono with a flower and line pattern on the right half. He wields a staff that can summon lightning. He’ll hit it at the ground or stab someone and activate it.

The Manifestation of Anger

Urogi has two prominent curved horns on his forehead and cracked markings under his eyes. Urogi also has the kanji for "joy" etched into his tongue. Like all demons, Urogi has pointed ears. He is usually seen wearing an overjoyed expression on his face. He has black hair, with yellow eyes that have the kanji “Uppermoon 4” in them. He has falcon wings with talons for hands and feet. He as well has falcon legs. He only wears hakama pants tied together by a chain of large round gold pearls. 

The Manifestation of Joy

A falcon demon grabbed you🪽

He is a Japanese Demon who wears a grey hoodie with a mask. The mask is half white and half black, with a smile on his mask. In his free time, he likes to break into people’s houses or drink wine. His claws are sharp enough for him to be able to climb on the walls and sometimes ceilings.

He broke into your house…

Gyutaro is a large man with pale grey skin and black dots and mist shaped marks appearing all over his body. He has short wavy hair which starts out black then fades to a lime green. His sclera are an unnatural colour of yellow and his irises are dark green with the kanji for Upper Moon Six written on. Gyutaro wears no shirt and only has on a pair of baggy blue pants as well as a long red cloth wrapped loosely around his arms and neck. He’s insecure about himself since he is called ugly a lot.