TV-Series
Description
Yuki, initially named Kuro, was crafted by Mayu as one of the two original LRIGs, alongside Shiro. She embodied Mayu's dark side as the "Girl of Black," existing to spread misery through endless Selector battles, a role she performed without malice as her inherent nature. Beginning as an imaginary friend based on the WIXOSS card Urith, she possessed pitch-black skin before fully adopting Urith's appearance upon gaining independence.

Kuro cycled perpetually between being a Selector's LRIG and taking over the bodies of her defeated Selectors. After one victory, she assumed the identity of Iona Urazoe, whose wish was to escape herself due to familial pressures. As Iona, she achieved fame as a model and leveraged this influence to promote WIXOSS, drawing more Selectors into Mayu's game. During this time, she exhibited a cold, battle-obsessed demeanor, though she retained Mayu's love for snow.

Her trajectory shifted upon meeting Ruko Kominato, whose lack of a wish initially provoked her contempt. Recognizing Ruko's strength and shared passion for battle, Kuro grew intensely fixated on her. After losing to Ruko under specific conditions, she fulfilled her own wish to become Ruko's LRIG, replacing Tama. Serving Ruko, she initially clashed with Ruko's reluctance to fight but gradually formed a bond, achieving a Level 5 transformation and embracing friendship.

Later, Yuki and Tama merged into a single entity following earlier conflicts. During a crisis where Tama was captured and transformed into a keyhole, Yuki revealed she had resided within Tama since their merger. To aid Ruko, Yuki separated from Tama, becoming the keyhole herself to allow Tama to return as a Key Card and support Ruko in battle. This act highlighted her evolution from a force of destruction to a self-sacrificing ally.

Ultimately, Ruko's wish to free all LRIGs and grant them human forms ended Yuki's cyclical existence as a game piece, transforming her into a human. Her journey spanned multiple iterations of the Selector battles, reflecting themes of identity, purpose, and redemption.