Kayo has light brown hair and wears blue dress and pink ribbon.
Kayo live in the home for the elderly alongside Noriko, Yoshie and Toki. Sōsuke often visits her, because his mother Lisa works there and the kindergarten is next to it. He gave her a lucky charm and he showed her Ponyo.
She is optimistic and she tries to cheer up people around her. She is the only person in the film, who said Fujimoto is a nice guy.