Riko Izayoi, a thirteen-year-old student from the Magic World, attends Magic School while concurrently studying at Tsunagi First Middle School in the human No Magic Realm. Her civilian look showcases dark magenta eyes and long, straightened dark purple hair styled in a partial ponytail with a light pink pom-pom and short bangs. She dons casual attire: a light blue elbow-length top under an indigo jumper featuring a red sash and floral prints, paired with black Mary-Janes and pastel indigo tube socks. Seasonal variations include distinct summer and winter outfits, plus festival attire in the movie—a purple dress with multiple bows, white gloves, and purple ankle-length boots. As an adult, her hairstyle shifts to a shoulder-swept ponytail, and she wears professional ensembles like a white frilly blouse with a red bow-tie and knee-length purple skirt, accessorized with purple high-heeled shoes, occasionally adding a purple hat and shawl during teaching. Transforming into Cure Magical, legendary witch of "the magic of the duo," her theme color purple manifests through brightened waist-length hair fanned into a ponytail with a red bow. She wears a small black witch hat adorned with pearls and stars, gold-pearl earrings, and a sleeveless purple dress with a high collar, pink bows, and a light purple underskirt. A short cream cape rests on her shoulders, complemented by opera-length dull purple gloves with gold bracelets and matching boots. Her elemental Styles include Ruby Style (fire-based twin-tails in a red/black dress), Sapphire Style (water-based high ponytail in blue attire), Topaz Style (electricity-based braided hair rings with a yellow dress), Alexandrite Style (lighter purple dress with a ruffled train), and Heartful Style (angelic wings and heart-shaped gem). In the movie, she achieves Super Cure Magical—enhanced with larger wings and a star-shaped chest jewel—during the battle against Dark Matter. Academically gifted yet initially weak in practical magic, Riko masks insecurities with the catchphrase "All according to my calculations." Her serious, overprotective nature stems from idolizing her older sister Liz, a respected witch; their strained relationship, fueled by perceived disparities in magical talent, drives Riko’s determination to surpass her. Partnering with Mirai Asahina (Cure Miracle) during her search for the Linkle Stone Emerald, they jointly raise the fairy Ha-chan, forging an inseparable bond with manga interpretations suggesting romantic undertones in their co-parenting dynamic. Riko acts as Ha-chan’s stricter parental figure compared to Mirai, tolerating less of the fairy’s impulsiveness. She also forms a protective, quasi-parental relationship with a child named Hisui, showing deep concern for her safety during conflicts with antagonists like Ire. At the Grand Magic Festival celebrating the Wishing Stone, Riko supports Mirai’s rescue of Mofurun after Dark Matter kidnaps the bear. She lends Mirai her broom and Miracle Light, then distracts Dark Matter’s familiars to buy time. Captured by Kumata (Dark Matter’s alter ego), she is freed by Mirai using reeking Foulrodo seeds—highlighting Riko’s tactical reliance on calculated solutions. Her leadership emerges when coordinating with Cure Felice and a purified flare dragon during the climax, contributing to the unified effort reviving Mofurun and defeating Dark Matter. In "Witchy Pretty Cure!! ~Mirai Days~," nineteen-year-old Riko returns as a Magic World teacher, reuniting with Mirai and Kotoha to confront threats like Ire. This role marks her growth from an insecure student into a confident mentor, though she retains characteristic protectiveness toward loved ones. Her adult portrayal balances disciplined rigor with gradual acceptance of spontaneity, influenced by her enduring partnership with Mirai.