Nezuko Kamado

Nezuko Kamado is the deuteragonist of Demon Slayer: Kimetsu no Yaiba. She is a demon and the younger sister of Tanjiro Kamado and one of the two remaining members of the Kamado family. Formerly a human, she was attacked and turned into a demon by Muzan Kibutsuji.

Appearance
Nezuko is a petite young girl with fair skin, visibly large, prominent fangs, 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, slanted downwards towards the sides of her face and framed by notably long eyelashes, the pupils of which can appear slit as she transforms. In the manga, Nezuko can sometimes be shown with more than 1 bow. According to Tanjiro Kamado, 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, with a red and white checkered hanhaba obi with an orange threaded obijime, with a green obiage. Over this, she sports a long, dark brown haori that reaches past her knees towards 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 to the left of her head, to keep her hair out of her face, and the bamboo muzzle Giyu Tomioka gave her, which is secured around her jaw with a strip of red cloth.

When Nezuko transforms into her powerful demon form during her fight with Daki, she loses both her gag and footwear, as well as the sleeves of her haori and kimono. She grows a short white horn on the right side of her forehead, and a vein-like pattern appears 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.

As a human, she had a very similar appearance, the only differences being her lack of Demon-like traits, vermilion hair, and pale pink eyes. Instead, Nezuko had fully black hair, worn tied back in three low buns, decorated by pink ribbons, and eyes of a dark red color that only appeared pale pink around their lower irises.

She wore the same kimono, just without her haori and with a large sheet of white cloth tied around her, which she used to carry her little brother, Rokuta Kamado, on her back.

Personality
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 first rather than 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 apologized to her.

As a Demon, however, Nezuko seems to have forgotten a good portion of her memories as a human, besides those related to her family, and thus doesn't retain the exact personality she had before transformation. She is still very caring and protective towards humans who she sees as members of her family, although this is mainly due to the influence Sakonji Urokodaki had on her while she was asleep for two years. Nezuko also retains some of her human emotions, as she has been seen to cry when sad and smile when happy, but in general she appears more detached than her human cohorts, although she is still much calmer and less malicious than most Demons.

Since becoming a Demon, Nezuko appears to have become also 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, 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 brother.

On the rare occasion that Nezuko attempts speech, she has been seen to stutter a lot, which may be due to her bamboo mouthpiece, which is seldom removed, and the fact that she didn't speak for a number of years after her transformation. However, after developing resistance towards sunlight, which allows her to go outside and interact with others more often, her speech has shown signs of improvement and she is able to fully pronounce words if someone else has just spoken them, or hears them repeated frequently enough.

Abilities
Demonic Transformation: When Nezuko is in a dire situation, she can transform into a berserk-like state, with demon crests, that appear as vine tattoos, circle her body, her veins popping out and a single horn protruding from her right forehead side. This form enhances Nezuko's fighting ability, at the cost of her becoming more demon-like, including the need to feed on human blood. So far, the only way she could revert back to normal is to have someone (in her case, Tanjiro) sing her a lullaby. During the Demon Slayer's fight against Hantengu, Nezuko manages to control this form at will.

Enhanced Strength: Despite never being formally trained, Nezuko's naturally enhanced physical strength allows her to easily fight against demons, however, due to being untrained, Nezuko instead relies on simply kicking her opponents or overwhelming them with brute strength instead. Her kicks allow her to sever Demons head with ease, or to kick down a door. Her strength is extremely high for a Demon who has never eaten a human, with her strength being able to match even that of an Upper Rank Demon.

Immense Regeneration: Nezuko possesses a tremendous regeneration ability that enables her to restore severed limbs within seconds. The true nature of this ability is solidifying her blood from her severed body parts that she could manipulate at will. Her regeneration ability is shown off during her fight with Daki, where she regenerated her severed limbs at the speed and proficiency of an Upper Rank.

Power Restoration: Nezuko's most defining trait as a demon is her ability to continuously restore her power, without consuming any human life as it is the normal method for most demons. Instead, she recovers her strength through mere sleep, often spending long times inside her prepared box.
 * Power Growth: As a subset of the above, Nezuko has shown to be able to grow stronger without any training or consuming humans. This ability is shown to trigger even in the midst of battle and with huge boosts. The greatest evidence of this was during her battle against Susamaru where her foot was blown by the temari demon's attack, but after regenerating she was able to face her in an even match kicking the ball and eventually surpassing her. Nezuko has shown to have powered up considerably as time passes.

Size Manipulation: Upon being transformed into a Demon, Nezuko displayed the basic ability to change and alter her body's size and height. She was able to shrink herself into the physical size of a small child in order to fit inside a small box or a basket in order to hide from sunlight when traveling through during the daytime with Tanjiro and could enlarge herself into a much bigger form, in order to be able to battle against Demons.

Sunlight Resistance: During their battle against Upper Rank Four, Hantengu, Nezuko developed immunity from sunlight, now being able to completely walk and go about in the daytime without being burnt to ash, unlike her fellow demons.

Blood Demon Art
Pyrokinesis: Nezuko's main ability is to manipulate special demonic flames created from her blood that are pinkish in color, dealing significant damage to demons but completely harmless against humans. Her flames are so powerful that it could deal significant damage to Upper Rank Four, Hantengu. Her flames has also displayed the ability to turn a Nichirin Blade bright red.

Techniques

 * -|Techniques=
 * Exploding Blood: Nezuko can ignite her blood, turning them into engulfing flames. She is capable of controlling her flames into being lethal or non-lethal at will. Nezuko is seen to be using her blood to heal others' wounds as needed. However, these flames only affect Demons and Blood Demon Arts, like Rui's threads or Gyutaro's poison. Nezuko's flames are also able to turn Tanjiro's Nichirin Blade from Obsidian Black to Bright Red, similar to how Yoriichi Tsugikuni has turned his blade from black to red before he fights, strengthening the effectiveness of his blade against Demons even further and allows Tanjiro to perform the Hinokami Kagura forms more effectively.
 * -|Demonstrations=

Trivia

 * The first kanji of Nezuko's name means "red bean" and is also part of the Japanese word for a flower, the Japanese Snowball. Whereas the second kanji is a common feminine suffix, which translates to "child". The first kanji of her last name translates to a traditional Japanese wood or charcoal-fuelled cookstove/furnace, while the second kanji means "door".
 * The fact that her surname translates to the word for a wood-fueled furnace is likely a reference to her family's occupation prior to their demise.
 * The first part of her Japanese voice actor's name, Akari Kitō, means "Demon".
 * Nezuko and Kitō also share the same height, 5'0".
 * Nezuko's rankings in the popularity polls are as follows:
 * Nezuko ranked 3rd place in the first popularity poll with 3,319 votes.
 * Nezuko ranked 11th place in the second popularity poll with 5,000 votes.

Quotes

 * (To herself) "Humans are to be protected and saved... I will never hurt them."
 * (To Takeo Kamado) "It would be great if I could meet a man like a Hisha."
 * (To Tanjiro Kamado) "I... I'm happy. I... I'm fine. I am... happy!"
 * (To Tanjiro Kamado) "Stop apologizing, Tanjiro. Why are you always saying you're sorry? Is it because we were poor? Did you feel unworthy because you wore a tattered kimono? Is that why you're always looking to take the blame? That's just the way things were when father died. We tried as hard as we could, but it didn't work. It's no one's fault. Things don't go exactly the way we want them to. We're only human. You get to decide where your happiness comes from. What's important is now. Let's look to the future. Let's do our bestーtogether!"
 * (To Tanjiro Kamado) "My dear brother! I'm so sorry. I'm sorry I didn't understand for so long. I put everything on your shoulders. Why is it you who always has to suffer? Why do kind people who struggle every day get trampled over and over? It's frustrating but don't give in! It is almost over so don't turn into a Demon. Let's go home. Let's go back home together."

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