Ayumi is a junior high student in the Yokohama area who appears in Pretty Cure All Stars New Stage and is a big Pretty Cure fan. She is shy, doesn't talk to anyone, and generally alone, until she has an encounter with Fu-chan. As Cure Echo, her brown hair becomes light blonde and her ponytails grow longer, and her theme color is white. She has the ability to control light.

She introduces herself as "Deliver these feelings! Cure Echo!" (思いよとどけ! キュアエコー!, Omoi yo todoke! Kyua Ekō!)