The twelve-year-old protagonist of the series. She has a mother and a younger brother, and her family owns and runs a café called Clover; her father, though mentioned, never appears. After drinking the seven-color drink, Mayu gains the special ability to transform. She has a long-lasting elementary school crush on Shinya, and is unsure if he reciprocates her feelings. She is the only one who can see Pucho because of the 7-colored drink.