TV-Series
Description
Guzuko is a character from the Lostorage incited WIXOSS anime, where she initially appears as the LRIG, a type of card spirit, belonging to a Selector named Sou Sumida. Her role in the story evolves significantly, and she continues to appear in the sequel, Lostorage conflated WIXOSS, as an antagonist.

Guzuko has a timid and apologetic personality, frequently using phrases such as "I'm sorry" or "excuse me". This demeanor is largely a result of the constant verbal abuse she receives from her Selector, Sou, who treats her harshly. Despite her fearful nature, Guzuko is not entirely passive and will occasionally attempt to scold Sou when she believes his actions are wrong, showing a small but notable degree of moral conviction. Her physical appearance includes shoulder-length red hair and red eyes, and she typically wears a black dress with red gloves.

In the narrative of Lostorage incited WIXOSS, Guzuko is forced to fight in battles alongside Sou. She disapproves of his strategy of bullying weaker opponents but is ultimately unable to defy him. After Sou loses his final coin in a battle, he suffers the penalty of the Selector system, which results in his own personality being erased and Guzuko gaining permanent control of his body. Following this event, she becomes an errand girl for another character, Kou Satomi. Her role expands in the sequel series, where she continues to serve as an antagonist but later undergoes a shift in allegiance.

Guzuko has a few key relationships that define her character arc. Her primary and most defining relationship is with her original Selector, Sou Sumida, who is verbally abusive towards her. Despite this mistreatment, she does not appear to hate him. Following her takeover of Sou's body, her dynamic shifts to a servile one with Kou Satomi, for whom she runs errands. In the later series, Lostorage conflated WIXOSS, Guzuko works alongside another LRIG named Aya, and the two characters eventually discuss their options, leading to a decision to assist the protagonists in the final battle, marking a significant development from her antagonistic role.

As an LRIG, Guzuko is intrinsically linked to the mechanics of the Selector battles. She is a being born from the memories of her Selector, Sou. In battle, her demeanor contrasts with her actions; she is known to apologize to her opponent even as she attacks without hesitation, such as when using an LRIG attack. Her abilities as a LRIG are tied to the black color attribute and a playstyle focused on relentless attacks.