Shion Hibiki is at first a positive, cheery, and outgoing girl. She carries with her a small kitten named Nya whom she considers her only family.
Shion transfers to Mochinoki Middle School, where Kiyomaro attends. Upon arriving, every male student took extreme infatuation with her, pummeling her with questions and trying to get her attention. After introducing herself, Nya, her "pet cat," reveals herself, much to the chagrin of the principal. All of the male students, excluding Kiyomaro, try to persuade the principal into letting Nya stay, using the facts that Kiyomaro brings a kid to school, (in which, Kiyo proceeds to exclaim he doesn't bring him, Gash comes of his free will,) and that even the principal himself brings his wife, so he lets it pass.
She only shown in the anime and not in the manga.
(Source: Zatch Bell! Wiki, edited)
