Yuki Kuran

Yuuki Cross / Yuuki Kuran (黒主 優姫 / 玖蘭 優姫 Kurosu Yūuki / Kuran Yūuki) is the protagonist of the series. She begins the series as a 15 year old first-year student at Cross Academy. Towards the climax of the first arc, Yuuki is revealed to be a Pureblood Vampire, and also a member of the Kuran family and Kaname's sister, to whom she promised as a child to marry.

Character concept
Yuuki was the first character designed and the first to have her personality defined, though with the intention of maturing later and being further defined. Matsuri Hino wanted to create a character different from her previous main character Airi from MeruPeri, she described Yuuki as the character who possesses her justice side and that Yuki has the forgiving and nurturing nature that she wants. Amongst dark and gloomy characters, Yuki is meant to be the healing and soothing character.

Name

 * Yūuki is a combination of yūu, meaning "tender" or "kind", and ki, meaning "princess". Interestingly enough another meaning of yūuki ( 勇気, yūuki) is "courage", whereas Yuuki can also mean (雪, yuuki) "snow" as well.
 * Officially romanized as "Yuuki" in Viz media publications and Chuang yi publications. Fan translations more accurately use "Yuuki" as the romanji.
 * Kurosu is the Japanese pronounciation of the English word "cross." However, the kanji has a different meaning, kuro meas "black" and su means "master": "black master."
 * The kanji of Kuran, is a combination of the old fashioned way of writing ku, meaning "nine," and ran, meaning "orchid": "nine orchids".
 * Kaien Cross knew Yuki's name beforehand. He says to Yuki that Kaname told him that all girls are princesses and thus will name her Yuuki and she is Kaien's 'tender princess.'

Appearance
Yuuki has large brown eyes and as her years as a human, has short dark brown hair. After Yuki returns to being a pureblood vampire, her hair grows out to be more than twice as long as it previously was and she possesses a more mature look, resembling her mother. Her body also becomes more perfectly proportioned. Yuuki has grown taller considerably over the year.

Personality
Yuuki is generally a cheerful and comedic girl. She is considered a poor student because she dislikes studying and falls asleep in class, reason being she stays up all night monitoring the school grounds and night students. She exhibits a strong attachment to her close friends. Her indecisive nature and reticence can be attributed to her insecurity regarding her missing history. As a human, she feared all vampires (because of a vampire that attacked her when she was little) except for Kaname Kuran, because of this fear she rarely left the Cross Academy grounds on her own. Yuuki doesn't like to reveal her fears and disguises it with a smile over her face.

Following her re-awakening as a pureblood vampire, Yuuki shed the fears she once retained, when a situation asks, she can put in an authoritative face as is expected for a pureblood princess. Yuuki's overwhelming fault is the tendency to burden herself with guilt over her ignorance when she learns the sufferings of other characters that they have kept secret.

Yuuki's favorite subject is Physical Education and her favorite foods are the ginger pork stir fry set and parfaits.

Story background
Yuuki was 5 years old when Rido Kuran attacked the Kuran household seeking to take her away. To protect her, Juri sacrificed herself to seal Yuki's vampire side and erased her daughter's memory. Yuuki's first memory is that of Kaname saving her from a level E vampire devouring her blood on a snowy day. She grew up as a human in the care of Kaien Cross, who also adopted her. Despite no longer remembering Kaname as her brother, he remained an important person in Yuuki's life, becoming her much beloved savior whose visits she always looks forward to, eventually leading for the teenage Yuuki to develop intimate feelings for him.

Despite having her memories sealed, as a child Yuuki experienced constant nightmares, a problem which continued nightly until Zero Kiryu joined the Cross household. As a result, Yuuki formed a strong attachment to the him. She found comfort in helping Zero with his personal nightmares and unofficially appointed herself as his guardian, entering his room nightly to make sure he slept soundly, and constantly worrying about his well being. Shortly after the arrival of Zero, another change occurred between Yuuki and Kaname's relationship. The closeness they once shared was lost after she witnessed Kaname feeding on a vampire classmate (Ruka), an act which both frightened Yuuki and reminded her the difference between humans and vampires. Now keenly aware of the futility of her feelings, Yuuki chose to distance herself from Kaname. Still, her admiration and longing for him remained. Furthermore as she grows and matures, Yuuki has to confront the secrets of the Purebloods (including Kaname) and her existence. It is noticeable that she looks exactly like her mother but had been implied to have the tenderness of her father.

Kaname Kuran
Kaname is Yuuki's admired savior, her pureblood brother, lover, fiance and ancestor. They have a long and complicated history. At times, it could be even viewed as mysterious which leads their relationship to be ambiguous.

Zero Kiryu
Yuuki and Zero were childhood friends, allies who became enemies and finally into an uncertain wary relationship as they both try to figure out where they stand.

Sayori "Yori" Wakaba
Sayori Wakaba is Yuuki's best friend and Yuki affectionately calls her Yori. Yori often worries about Yuuki and her prefect duties, telling her she needs to rest and jokes about her being a vampire due to Yuuki's sleeping habits. Yori knows that Zero has feelings for Yuuki and ask her about them, but Yuki most of the time has no idea what she's talking about. When Yuuki is reawakened as a vampire and vanishes, Yori is worried and tells Yuuki that no matter what they will always be best friends. She has also told Yuuki that she isn't scared of her despite Yuuki telling her that she could bite her.

Hanabusa Aido
Aido is Yuuki's antagonistic senior classman who is jealous of her relationship with Kaname. After Yuuki is revealed to be a Pureblood vampire, Aido ends up becoming her tutor and mentor. This is further enhanced to the status of protector as the series progresses.

Powers
Like all pureblood vampires, Yuuki has immortality and the ability to heal from anything with the exception of anti-vampire weapons to her heart or cutting off her head. Yuuki has demonstrated the following abilities, though most of her abilities are instinctual and uncontrolled:


 * Telekinesis, breaking windows on a few occasions when experiencing strong emotions.


 * Ability of flight using a pair of wings on her back made of blood that resemble butterfly wings.


 * Ability to interfere with memory blocking through touch and includes breaking memory spells on herself.


 * Ability to wield anti-vampire weapons both as a human and as a vampire and transforms the Artemis rod into its scythe form, like her mother did.

Manga

 * "I want to change things and that means I've got to do something." - 58th Night, Pg5 (Chuang Yi ed.)
 * (To Zero Kiryu) "I'll keep running away from you, Zero. so that you will have a reason to live, by still having enemies to go after." - 46th Night: enemies 

Anime

 * "It's my duty as a guardian to protect Cross Academy, Day and Night" - 2nd Episode "Memories of Blood"
 * "You can hate me along with the vampires, But I won't let you give up on everything Zero!" - Episode 6 "Their Choices"
 * "I was thinking, if I could become someone that Zero needs, then I could say goodbye to the me without a past." - Vampire Knight Guilty Episode 7 "The Thorny Kiss"
 * "I am a pureblood vampire, the one thing Zero despises, but I can't help that I still want to see him" - Vampire Knight Guilty Episode 8 "Spiralling Recollections"