Kyōko Kagami is the mother of the protagonist, Atsuko Kagami, in the anime series Himitsu no Akko-chan. Her background and role shift noticeably across the different adaptations of the series. In the first anime series from 1969, she is a homemaker who takes care of the household and supports her daughter. In the second series from 1988 and the third series from 1998, her profession changes: she becomes a famous illustrator, though this new career is paired with a clumsiness in domestic tasks, creating a contrast with her earlier portrayal.

Her personality is consistently framed through her relationship with her family. She is a loving and caring mother who is patient with Akko and often serves as a source of emotional support. Her motivations revolve around her family's well-being; she takes pride in her daughter and works to maintain a harmonious home. In the later series, her occupation as an illustrator adds a creative and slightly distracted dimension to her character, balancing her dedication to family with a professional identity.

Kyōko's role in the story is primarily that of a supporting character. She is present in many everyday scenes at the Kagami household, providing a stable backdrop for Akko's adventures with the magic mirror. Her interactions with her husband, Kenichiro, show an affectionate but sometimes humorous dynamic. In the second and third series, her character gains more screen time and dialogue, occasionally forming part of the plot when her work or domestic mishaps become relevant.

Her development across the series reflects the changing times. The shift from a full-time homemaker to a working mother and artist mirrors broader social trends and gives her character more depth. She does not possess any supernatural abilities; her strengths lie in her emotional intelligence, her artistic talents in later versions, and her unwavering support for her daughter.