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Kairi's Grandma is a resident of Radiant Garden, and the only one of Kairi's relatives that appears in the series. She appears in person in Kingdom Hearts Birth by Sleep, and within Kairi's memories in Kingdom Hearts. Both times, she is seen telling her granddaughter the story of light and darkness.
 Kingdom Hearts Birth by Sleep
Kairi's Grandma finds Kairi after Aqua and Mickey save her granddaughter from a swarm of Unversed. As they walk away, Kairi asks her grandmother to tell her favorite story about the light and the darkness, as Aqua listens in the background.
 Kingdom Hearts
While in Traverse Town, Sora suddenly experiences one of Kairi's memories—a memory of Kairi's grandmother telling the story of light and darkness while reading in Hollow Bastion's library. After Kairi is rescued and taken to Traverse Town's Underwater Cavern, she tells Sora that there is a deeper meaning to this story, and that it was "more than just a fairytale".
Kairi's Grandma is a small, elderly woman with thick, grey hair tied into a bun. She is usually seen smiling pleasantly with her eyes closed, though the few times they are seen open, she is shown to have blue eyes like Kairi. She wears a sleeveless, purple dress with a white apron over it. She also wears a dark cloth tied around her neck (which was maroon in Kingdom Hearts and grey in Kingdom Hearts Birth by Sleep), and a white ring on her left ring finger.