Yuki Kuran

Yuki Cross is the adoptive daughter of the headmaster of Cross Academy. Yuki is a first year student at Cross Academy and is a member of the school's disciplinary committee, which is a Guardian for Cross Academy. In her capacity as a Guardian, she is responsible for the nightly duties of monitoring and protecting the Day Class. Yuki carries the anti-vampire weapon, the Artemis Rod.

Personality
Yuki is generally a cheerful and comedic girl. She exhibits a strong attachment to her close friends. Her indecisive nature and reticence can be attributed to her insecurity regarding her missing history. She has a fear of vampires which means she rarely leaves the Cross Academy grounds on her own. She is protective over Zero and fears the fact that he might become a level E.

Appearance
Yuki has always been small for her age, as a human she was noted to be underdeveloped. Following her transformation to a vampire, her body has started to mature and her once short hair grew long overnight.

Background
Yuki was approximately 5 years old when Rido Kuran attacked the Kuran family seeking to take Yuki. To protect her daughter, Juuri sacrificed herself to seal Yuki's vampire side and erased her daughter's memory. Yuki's first memory is that of Kaname saving her from a vampire. Yuki grew up harboring deep feelings for him and the two had a close relationship.

Yuki had troubled nightmares nightly until 4 years ago, when Zero Kiryu joined their household and Yuki formed a strong attachment to the boy. Yuki's relationship with Kaname became distant after she witnessed his vampire nature as he feed on a vampire classmate and as a human, Yuki believed she had no chance with Kaname and began to fear him a little, but her admiration for him remained.

Yuki's bestfriend is Sayori Wakaba whom Yuki calls "Yori".

Plot Summary
Following her discovery of Zero's awakened nature as a vampire and his subsequent struggles with bloodlust, Yuki chose to go against taboo and allowed Zero to feed upon her in secret. In order to prevent Zero running away, Yuki promised that she would be his ally and that she would kill him when he became a level E vampire. She also attempted to bargain her humanity for Zero's life when Shizuka offered her a deal, but Zero prevented her from becoming a vampire.

Troubled by the gap in her memory, Yuki attempted to ask Kaname to reveal what he knew. Kaname bargained the answer in return for her becoming his lover. Yuki admitted she loves him and agreed to his proposal, but when she didn't get an answer, she attempted to remember on her own, causing herself waking nightmares, at one point almost suffocating Zero. Kaname then bit Yuki and re-awakened her as a pureblood vampire and drinking his blood brought back the complete memories of her past. Yuki was reunited with Kaname as his sister and his betrothed.

Returning to her vampire self, Yuki exhibited the uncontrolled return of her vampire powers return and physical changes also occurred. Yuki chose to break her friendship with Zero, aware of the new antagonism between them, however Yuki retained her friendship with her bestfriend, Yori. Yuki began to sense the danger of Rido's revival and Kaname attempted to remove her from danger. Yuki refused to leave the school, but convinced Kaname to continue his own mission. Yuki's ignored the Artemis Rod's attempts to reject her vampire nature until finally it morphed into a new weapon as a scythe.

Yuki finally confronted her uncle Rido and almost fell prey to his words. Zero interrupted them attempting to kill Rido. Yuki reconfirmed her vow to be Zero's ally despite being called his enemy. Though Zero attempted to remove her from the fight, Yuuki managed to score the killing blow on her uncle. When Zero announced his intention to kill all purebloods including Yuki, she decides to defend herself. Both fail to attack and Kaname interrupts their confrontation. Yuki prevents Kaname and Zero coming to blows and Kaname leaves.

Yuki confirms she is the same person she has always been to Zero and tells him about her desire for only Kaname's blood. Zero expresses a maddening desire for her blood and she allows him to drink her blood again. Zero reiterates his intention to kill Yuki and she declares she will run from him to give him a reason to continue living.

Yuki breaks down in despair over the position she is now in as Zero's enemy and she finally realises Zero's true feelings for her. As she cannot change what she is, she resolves to lock up her pained heart instead. She collects her things including the Resin Rose finally recalling Kaname's promise and she later thanks Kaname for remembering the promise she could not remember. She leaves the Academy with Kaname for unknown places.

Trivia
• Her first name is a combination of yuu, meaning "tender" or "kind", and ki, meaning "princess".