Nao's younger sister. She appears to have some kind of ability to predict the near future. She is an energetic girl and even though she pretends to be fooled, she can tell that Pastel Ink is Ink. Mio also likes the idea of Ink and her brother as a couple and secretly tries to set them up on dates. In episode 12 it is revealed she too is a Magical Girl named Magical Mio with Dandy as her partner; She transforms using an orange flip phone and changing with hearts, her hair turning blond and wearing a pink dog-like suit. Her powers are uncertain since Dandy defeated the enemy himself. Mio is more brutal to her partner's perverted actions than the other magical girls.