Kimetsu no Yaiba does not belong to me but to Koyoharu Gotōge ... I only do this for fun and hobby
Warning: This is an AU. I think there is a slight Out of Character, don't blame me! I'm new to fandom.
There are also changes with the manga canon.
1) Tanjiro Kibutsuji: Eldest son of Muzan Kibutsuji and known as the demon prince of the burning sun. His disguise as a human is Tanjiro Kamado.
-Physical description: Burgundy hair long up to her waist and tied by white bows in a high ponytail, reddish eyes and black / red gradient marks in the shape of flames that run from his forehead on the right side of his face to the chest. He wears a red 3/4 sleeve kimono with some white details as well as a black hakama, he still wears his Nichirin Blade on the right side of his waist and does not wear sandals.
-Personality: Smiling, friendly and helpful. He adores his father and sister, and admires the moons being Akaza and Kokushibo, his teachers. Deranged, cruel and manipulative ... take on the role of a born leader.
-Blood Demon Art: Related to fire, from which it can reduce to ash even hard elements such as bone, rocks and buildings.
2) Nezuko Kibutsuji: Younger daughter of Muzan Kibutsuji and known as the fiery crimson demon princess. Her disguise as a human is Nezuko Kamado.
-Physical Description: Long black hair with vermilion highlights and tied in a high ponytail with black bows, pink eyes, pastel pink sharp claws. She wears a short kimono up to her knee in shades of pink with a white print, accompanied by a black haori and without wearing any footwear. On her face there are black curved marks on both cheeks and forehead.
-Personality: She's outgoing and loving, strong character. She loves her father and brother, she enjoys the presence of the moons as her family. Sadistic and shows no mercy to anyone and less to demons who believe that it is not worth it.
-Blood Demon Art: Blood explosive, it can ignite your blood and turn it into engulfing flames.
3) Tsunami: It's the identity that Giyu Tomioka decided after awakening as a demon.
-Physical description: Black hair with dark blue strands at the ends and collected in a low ponytail, dark blue eyes, has black marks from his eyelids to under his eyes, the latter with a pattern similar to waves, he also has 2 small gray horns with lines of the same color only darker. He wears a black hakama and a blue top with a black geometric print. The claws are blue that degrades from dark to pastel
-Personality: Passive, attentive and cold tempered when the situation is required. Part of Tomioka's personality remains in his new form, only his negativism and self-loathing is nonexistent. He is too faithful to Tanjiro than to Muzan or Nezuko and he gets along well with Sen than with the rest of the demons. In the case with the upper moons, he appreciates Akaza, Kokushibo and Nakime (the latter being, which Tsunami enjoys their melodies).
-Blood Demon Art: Related to water in all its states.
4) Kaminari: It's the identity that Zenitsu Agatsuma decided after awakening as a demon.
-Physical Description: Yellow hair with long black highlights tied to a low ponytail with orange bows, 2 small cream-colored horns and bright yellow eyes, both cheeks adorn the lightning symbol in a gradient between yellow, orange and black. The dress is a yellow haori with white details, black and yellow colored Kimono with white details, from his calves to the beginning of his ankles they are covered with bandages. His claws are yellow.
-Personality: It's the opposite of how Zenitsu was as a human, being cold and dry, he faces dangers safely and does not fear anything. He is very faithful to Nezuko being the master-slave relationship (Something that he accepts with fervor and that Muzan was against but in the end, the girl got her way).
-Blood Demon Art: Related to thunder, lightning and storms, there are capable of even vanishing anything.
5) Inoshi: It's the identity that Inosuke Hashibara decided after awakening as a demon.
-Physical Description: Black hair with dark blue streaks, with piercings adorned with 2 fangs in his ears, teal blue eyes (Boar's eye color) and thin black curved marks on his cheeks. His torso has marks of a boar tattoo, he is bare only the upper part as he wears black pants and a boar skin belt. The claws are teal blue.
-Personality: It maintains the totality of the personality of its old human life. He admires Akaza and Kokushibo being the only ones he has not been able to defeat, and for some rare reason he get along with Douma to such an extent that he appreciates and enjoys him for his time in the latter's cult.
-Blood Demon Art: Use part of their blood to create beasts in moderation (If you overdo it, he end up very hungry and lose his temper)
6) DokuHana: It's the identity that Kanao Tsuyui decided after awakening as a demon.
-Physical Description: Black hair with purple / pink streaks tied in a low ponytail and adorned with a white and black butterfly, light purple eyes. She wears a short white cape, fastened to one side by a triple dark purple knot, a lilac yukata with a black and white flower pattern, and white lace-up knee-high boots. On her face, there is a pattern on her cheeks of smooth curved lines in the direction of her eyes, and on the right eye she has black sclera so it is covered by a lock of her hair. The claws are lilac in color and tend to be long.
-Personality: A mix of Kanao and Shinobu's personalities. Sarcasm is her greatest use and her words and actions are pure cynicism and cruel. She silently admires Tanjiro and for some rare reason she get along with Douma to such an extent that she appreciates and enjoys him for her time in the latter's cult. She gets along well with Tsuyoi, Nezuko, Inoshi and Kirai
-Blood Demon Art: Related to flowers and poison. In its claws they're impregnated with poison and that it handles at will.
7) Hanta: It's the identity that Genya Shinazugawa decided after awakening as a demon.
-Physical description: Black hair with gray streaks, dark purple eyes and black sclera, he has a black mark where his scar was with patterns of lines in strong curved shapes. He wears a purple haori, the top of a black yukata and a hakama of the same color as the top, as well as a pair of zōri with gray straps. The claws are purple.
-Personality: He maintains the totality of the personality that Genya had, only that he has denied what was the existence of his older brother Sanemi. He admires Tanjiro and from time to time envies the Kibutsuji brothers' blood ties.
-Blood Demon Art: Adaptable type, he can mold any type of weapon or equipment with his blood.
8) Kirai: It's the identity that Kanroji Mitsuri decided after awakening as a demon.
-Physical Description: Dark pink hair with green tips and is tied in a braid and adorned with barrettes in his mane, he wears a provocative short kimono to the height of the calf faded from black to purple, Geta and long zari almost reaching the limit of the kimono. On the face it has 3 vertical lines graduated from green to pink under its two-colored eyes, being pink in the right and green in the left and its claws are greenish-pink.
-Personality: In addition to maintaining his personality that she had as a human, she also manages the personality of Obanai. She likes to love but also to hate.
-Blood Demon Art: Use her blood as pheromones to control any human who has too positive (Love) or negative (Hate, resentment, envy) feelings. Its flexible body allows for almost impossible physical movements.
9) Kasumi: It's the identity that Muichiro Tokito decided after waking up as a demon.
-Physical Description: Long, straight pale turquoise hair that fades to a black when it approaches his waist, mint eyes and 3 black dots are adorned under his eyes, as well as 2 triangles on each side of his forehead pretending to be horns. He wears a black kimono with mint green details with long sleeves, his claws are turquoise and he doesn't wear shoes
-Personality: Cold and dry, no positive feeling or emotion exists in your being.
-Blood Demon Art: Related to the mist. You can make your blood gaseous from which you can create illusions in the mists.
10) Sen: It's the identity that Senjuro Rengoku decided after awakening as a demon.
-Physical description: Long golden hair up to his shoulders with red reflections as well as long ears of golden tones coming out of his hair, golden eyes with the pupil vertically, red lines adorning both cheeks and chin and forehead and he wears a simple white kimono and red hakama, and a gold-colored kitsune colar with red lines.
-Personality: He's not shy and is cheerful, passive and helpful. He loves his job and hates fights.
-Blood Demon Art: Related to flames.
11) Tsuyoi: It's the identity that Aoi Kanzaki decided after awakening as a demon.
-Physical Description: Long hair tied in 2 low black pigtails with degraded blue tips, teal blue eyes, gray windlike markings on her cheeks, sky blue claws. She wears a short v-neck sleeveless pastel blue dress, black obi with gray accents, and knee-high socks printed with swirling lines exposing the soles of her feet.
-Personality: She maintains part of Aoi's personality, she is very good at infiltrations, sometimes she tends to have friction with Inoshi.
-Blood Demon Art: Related to ice, her blood also allows it to go unnoticed.
NORTH AMERICAN SLAYERS
1) Gray Foster: 20-year-old American and leader of the group sent to Japan.
-Physical description: Long blond hair to the height of his shoulders and tied to a low ponytail, freckled and with olive eyes. He wears the slayer uniform only in American military style as well as the use of white gloves and a black cap / beret with gold lines.
-Personality: Patient, friendly and helpful, wean to get serious as he is usually scathing if they make him angry.
-Breath type: User of the breath of the earth and handles 6 movements.
2) Will Grandbell: 30-year-old American and Foster's right-hand man.
-Physical description: Short light brown hair and eyes of the same color, he has a mole under his left eye. He wears the slayer uniform only in American military style as well as the use of white gloves and a black cap / beret with gold lines.
-Personality: Wise and calm, gives advice to novices for daily life as well as in the fight. His age is not an impediment to fight and protect humanity.
-Breath type: User of the breath of the forest and handles 8 movements.
3) Luke Garden: 28-year-old American and great strategist.
-Physical description: Short black hair with blue highlights, gray eyes and a unique cut scar on the right cheek. He wears the slayer uniform only in American military style as well as the use of white gloves and a black cap / beret with gold lines.
-Personality: Outgoing and relaxed, he doesn't like to pressure himself and those around him. When the situation becomes complex, he decides to use his mask without emotions to power his attacks.
-Breath type: User of the ice breath and and handles 10 movements.
4) Merry Steiner: 25-year-old American and one of the few women in the Demon Slayer organization in the USA.
-Physical description: Blonde and short wavy hair, grayish eyes and a normal bust (not so big nor so flat). He wears the slayer uniform only in American military style as well as the use of white gloves and a black cap / beret with gold lines.
-Personality: A scathing tomboy, distrusts people due to misfortunes of the past. A tsundere although I deny it and stubborn.
-Breath type: User of the breath of light and handles 8 movements.