Yuki’s earliest memory is being rescued from a vampire attack by Kaname Kuran when she was five years old. Afterward, she was adopted by Kaien Cross, the headmaster of Cross Academy, and raised as a human, completely unaware of her true vampire origins.

In reality, Yuki was born as a Pureblood vampire and the daughter of Haruka and Juri Kuran. Her parents sacrificed themselves to protect her from Rido Kuran, who sought to use her as a tool for his revival. To safeguard her from Rido and other Pureblood threats, her mother sealed away her vampire nature and erased her memories, allowing her to grow up as an ordinary human.

Throughout her childhood, Yuki formed a close friendship with Zero Kiryu, a boy whose parents were killed by a vampire. Together, they served as Guardians at Cross Academy, maintaining peace between the Day and Night Classes. However, her dormant vampire nature eventually resurfaces when Kaname awakens her true self, forcing her to grapple with her identity and past.

Yuki has short, dark brown hair and large, expressive reddish-brown eyes that reflect her kind yet conflicted personality. Her petite build and delicate features often give her a youthful and innocent appearance.

Before awakening as a Pureblood vampire, she wears the Cross Academy Day Class uniform, consisting of a black blazer with white trims, a pleated skirt, a red ribbon, and knee-high socks. As a Guardian, she is often seen carrying Artemis, her anti-vampire weapon.

After regaining her memories, Yuki’s appearance subtly changes, reflecting her noble heritage. Her hair grows longer, and she often dons elegant vampire attire, including flowing gowns and formal dresses, further emphasizing her transformation into a Pureblood princess.

Yuki is kind-hearted, cheerful, and selfless, always putting others before herself. As a child, she was full of curiosity and warmth, never hesitating to befriend others, including Zero and Kaname. Despite the dangers surrounding vampires, Yuki remains idealistic, believing in the possibility of peace between humans and vampires.

However, beneath her bright demeanor lies a deep-seated fear and insecurity. Having grown up with no memories of her past, Yuki constantly struggles with her identity, often feeling out of place in both the human and vampire worlds.

After awakening as a Pureblood, Yuki’s personality matures. She becomes more reserved, composed, and dignified, though she retains her compassionate and self-sacrificing nature. Despite the weight of her heritage, she remains determined to protect those she loves, showing great inner strength and resilience.

• Guardian of Cross Academy
  At the beginning of the series, Yuki is a student at Cross Academy and one of its Guardians, tasked with maintaining peace between the Day Class (humans) and the Night Class (vampires). She works alongside Zero Kiryu, ensuring that the existence of vampires remains a secret while preventing conflicts between the two groups. Her life takes a turn when she starts experiencing vivid dreams and flashes of forgotten memories, hinting at her mysterious past. Her bond with Kaname Kuran and Zero Kiryu grows stronger, as both play crucial roles in protecting her and shaping her identity.

• Awakening as a Pureblood Vampire
  Yuki’s true heritage is revealed when Kaname awakens her sealed vampire nature, restoring her memories of her past life as Yuki Kuran. This revelation shakes her sense of self, forcing her to grapple with the responsibilities of being a Pureblood princess. Following this, Yuki leaves Cross Academy with Kaname, embracing her identity as a Pureblood vampire and his fiancée. However, she struggles with the conflicting emotions she feels for both Kaname and Zero, leading to emotional turmoil and self-discovery.

• Return to Cross Academy and Final Conflict
  Determined to fulfill her adoptive father’s dream of coexistence, Yuki returns to Cross Academy as the new leader of the Night Class. She hopes to bridge the gap between humans and vampires, though she faces opposition from vampire factions who see her as a threat. In the final arc, Yuki fights to protect both the human and vampire worlds, ultimately sacrificing herself to stop Kaname’s self-destructive plan. After his departure, she dedicates her life to his dream, continuing to work towards peace and unity between the two species.