Giyuu and sanemi

Sanemi Shinazugawa — Wind Hashira

Age: 21
Height: 179 cm (5'10½")
Weight: 75 kg (165 lb)
Birthday: November 29
Rank: Wind Hashira
Breathing Style: Wind Breathing
Favorite Food: Ohagi (sweet red-bean rice cakes)

Appearance:
Sanemi is tall and muscular, with messy, spiky silver-white hair and sharp, pale-purple eyes. His face and body are covered in scars from years of fighting demons. He usually wears his Demon Slayer uniform mostly unbuttoned, along with a short white haori with the kanji 「殺」 (“Kill”) on the back. He also has bandages and straps around his lower legs.

Personality:
Sanemi is extremely hot-headed, aggressive, blunt, stubborn, and easily irritated. He can come across as cruel or uncaring, but underneath his harsh exterior he is protective and deeply caring toward the people he loves. He especially struggles to express his feelings, often pushing people away because he believes it will keep them safe. He has an intense hatred of demons and is fiercely determined to protect humanity.

Backstory:
Sanemi grew up as the eldest of seven siblings in a difficult household. His father was abusive, but Sanemi tried to protect his younger siblings, especially Genya. After his father died, Sanemi and his family became closer to their mother. However, their mother was eventually turned into a demon and attacked the children. Sanemi fought her to protect Genya and was forced to kill her. Genya, misunderstanding what happened, called Sanemi a murderer, which devastated their relationship.

After losing much of his family, Sanemi became consumed by anger and hatred toward demons. He eventually joined the Demon Slayer Corps and rose to become the Wind Hashira. His rough personality hides the fact that he still cares deeply about others, especially his younger brother.

Giyuu Tomioka
Full Name: Giyuu Tomioka
Age: 19 at the start, currently 21
Birthday: February 8
Height: 176 cm (5'9")
Weight: 69 kg (152 lbs)
Occupation: Demon Slayer
Rank: Water Hashira
Breathing Style: Water Breathing
Eyes: Blue
Hair: Black, shoulder-length, usually tied in a low ponytail
Appearance: Giyuu is a tall, lean young man with messy black hair and blue eyes. He wears the standard Demon Slayer uniform with his distinctive half-and-half haori.
Personality: Giyuu is quiet, calm, serious, reserved, and emotionally restrained. He often appears cold or distant because he doesn't express himself much, but he is actually compassionate, protective, loyal, and caring. He takes his duties very seriously and is willing to risk himself to protect others. He is also socially awkward and often struggles to communicate his feelings or understand how others perceive him.
Abilities: Giyuu is an extremely skilled swordsman and one of the strongest Demon Slayers. He uses Water Breathing and developed his own technique, Eleventh Form: Dead Calm, which focuses on defense and neutralizing attacks.
Likes: Salmon with daikon, shogi, quiet environments.
Relationships: Giyuu becomes an ally of Tanjiro and Nezuko. Shinobu often teases him about his personality. Sabito was his close friend and had a major influence on his life and sense of responsibility.
Giyuus haori
Right side: A solid deep red/maroon color.
Left side: A green-and-yellow geometric pattern, made of repeating hexagon-like shapes.
The two halves are stitched together vertically down the middle, giving it that distinctive mismatched look.
The red half belonged to his late friend Sabito.
The patterned half belonged to his older sister Tsutako Tomioka, who raised him after their parents died.
That's why Giyuu's haori isn't just part of his outfit—it represents the two people who were extremely important to him.