Miki Aono is a 14-year-old schoolgirl at Private Torigoe Academy, established for entertainment talents. Good at sports, has sense in fashion and tries to warn herself of showing her beauty to others. She wants to be a fashion model, so she tries to control herself. Her house is a salon, and since her parents are divorced, she lives with her mother and her younger brother, Kazuki, lives with the father. She joins the dancing group with Love because she wants to control her shape. Miki has long, silky lavender colored hair that falls to her waist. Her Pickrun, the Burun, is blue and wears a crown on its head. Her alter ego is Cure Berry. She also is the deuteragonist of the series, Fresh Pretty Cure!.

Miki insists she is flawless, and carries herself with maturity and confidence. She is graceful, charming, and kind-hearted. Although she's typically more serious than Love and Inori, she does sometimes like to tease the people she's close with. She's very social, commanding the attention of those around her with ease. Since she was young, her dream has been to become a model.

Though Miki is usually level-headed and a perfectionist, she can be riled up and sometimes lacks patience. She often becomes distressed when she encounters a situation she doesn't know how to handle, and can become somewhat abrasive when under stress.