is the kind-hearted protagonist of the manga and anime series Demon Slayer: Kimetsu no Yaiba, who becomes a Demon Slayer to avenge his family and cure his sister, Nezuko, after she is turned into a demon. Known for his exceptional sense of smell, strong willpower, and compassionate nature, he trains to fight demons, using powerful breathing techniques like Water Breathing and the Hinokami Kagura, driven by his goal to restore Nezuko's humanity and defeat the demon king, Muzan Kibutsuji. Hair & Eyes: His hair is combed back to reveal his forehead, and he has large, gentle, dark red eyes that lighten toward the bottom of the iris.The Scar: He has a burn mark on the top left of his forehead, which he got saving his sibling from a hot brazier. During combat, this scar hardens into a jagged, red, flame-like shape known as his Demon Slayer Mark.Clothing: He typically wears a black-and-seafoam-green checkered haori over his standard-issue, dark brown Demon Slayer uniform, sometimes pairing it with a turquoise scarf.Accessories: He always wears his family's circular Hanafuda earrings, which feature a red sun rising over mountain peaks

Hairstyle: She wears her hair in three thick braids with five shorter, choppy clumps framing her face as voluminous bangs, all ending in lime-green tips.Outfit: She wears a heavily customized, unbuttoned version of the standard Demon Slayer uniform (tinted dark plum/plum) which exposes her chest. Instead of pants, she wears a short, pleated skirt and a plain white haori jacket.Accessories: She sports lime-green thigh-high stockings with vertical stripes and teal cuffs (a gift from Obanai) and white zōri sandals with pink straps

is a 14-year-old boy with fair skin, a lean physique, and long, straight hair that fades from black to a mint-green/turquoise color at the ends. He has large, blank turquoise eyes and wears oversized, flowing clothes that resemble a kimono.

is a tall, muscular young man with a permanently irritated expression. He has dark purple, inward-slanting eyes, a large jagged scar across his right cheek, and black hair styled into a spiked mohawk. He wears a dark olive-green uniform under a purple yukata.

is a fair-skinned young girl with long, wavy black hair that fades to a flame-orange at the ends. She wears a pink asanoha (hemp leaf) patterned kimono, a checkered obi, a dark brown haori, and an iconic bamboo muzzle. Her expressive eyes are soft pink, matching her clothing