Nezuko

Nezuko is a young girl with fair skin, visibly large, prominent fangs, a slender build, and sharp, stiletto nails with a base color of light pink and ombre fading to a red-pinkish color at the end where they point. Her hair is long, black, and wavy. It reaches just below her waist, turning a flame-orange color as it passes her elbows, and appears to be crimped into large, straight ridges, worn side-swept drastically to her left. She has soft-looking, pale pink eyes that appear a lighter color around the rims of their irises and on the center a persian pink below the pupils; they slanted downwards toward the sides of her face and framed by notably long eyelashes. Her pupils appear as black slits as she transforms. In the manga, Nezuko can sometimes be shown with more than one bow. According to Tanjiro, Nezuko was known as a great beauty in their home town.

She wears a light pink kimono with an asanoha (hemp leaf) pattern, the lining a paler pink layered with the white wavy yuban underneath as a medium-length trailing skirt kimono to freely move as a demon; this, the white clothes lowly cover her knees then goes down to almost her ankles making a open window, secured by a red and white-chequered hanhaba obi with an orange-threaded obijime and a green obiage. Over this, she sports a long, dark-brown haori that reaches her calves, as well as a pair of zōri with pink straps and white tabi socks, wrapped with thick pieces of black material resembling kyahan. Nezuko also wears a small pink ribbon on the left side of her head to keep her hair out of her face, along with the bamboo muzzle Giyu Tomioka gave her, which is secured around her jaw with a strip of red cloth.

When Nezuko transforms into her awakened form during her fight with Daki, she has a bigger, taller, and more curvaceous body with longer hair that reaches to her feet. She loses her bamboo muzzle and footwear, as well as the sleeves of her kimono. She grows a short white horn on the right side of her forehead, designed with an irregular crack pattern, along with vein-like patterns in her forehead near her horn. She has a vein-like pattern around her left eye, but her most striking new feature is the red and green vine-like pattern that covers her skin, circling around her arms, legs, and chest, along with crack-like patterns around the rim of her irises.

Nezuko's original personality as a human was that of a kind and caring girl who thought of others before herself, much like her older brother, Tanjiro. Additionally, she was a responsible elder sister to her younger siblings and often put their needs before her own. Nezuko is, however, not afraid to get in harm's way, protecting her friends from demons even after being returned to a human state. It is also shown that Nezuko's humane, laid-back demeanor supports this fact after Tanjiro apologizes to her.

Since becoming a demon, Nezuko appears to have become rather brazen and does not seem to fear fighting; she fiercely guards her brother as well as her allies. She has also developed a strong willpower, which can be seen through her refusal to consume human flesh or blood, even in cases of extreme injury or exposure to human blood, which can be seen when she refuses Sanemi Shinazugawa after he attempts to lure her into biting him with his Marechi blood. Her strong willpower remains even when she is no longer a demon, as shown when she willingly leaps in front of Inosuke to protect him from her own brother, who had become a demon and was attempting to kill those around him. Though she could have been killed, Nezuko did not hesitate to protect her.