Ringo Yukimori is one of three protagonists chosen as magical idols to save Fairyland. She has short pink hair with curled ends, brown eyes, and wears a distinctive red headband. Her typical outfit includes a white puffy shirt under a pink lacy vest with a large bright red bow, a red skirt, and long brown boots; she switches to lighter summer clothes including red sandals in warm weather. She stores her pink magical diamond within a dark pink heart-shaped bracelet on her left wrist for transformations.

Her personality blends kindness and adventurousness with a dream of becoming an idol, fueled by admiration for the performer Wish. She exhibits talent in cooking and frequently helps her parents at their bakery, renowned for "the best apple pie in the world." Academically, she struggles as a heavy sleeper who often neglects homework, yet consistently prioritizes helping others over her own responsibilities.

Ringo lives with her parents and septuplet younger brothers—named Getsu, Ka, Sui, Moku, Kin, Dou, and Nichi after days of the week, sometimes called "The Seven Dwarfs"—above the Yukimori bakery. Her journey starts when fairy tale books vanish during an outing with her mother, a sign of Fairyland's distress. Later, while distributing apple pies near a concert venue, crowds heading to see Wish lead her to encounter future teammates Leila Takashiro and Natsuki Sasahara. Amidst the chaos, Ma-Pets arrive from Fairyland carrying magic gems, and Ringo receives a pink gem that forms her bracelet, designating her the Snow White princess.

As part of the secret idol unit Lilpri, Ringo transforms into an older pop star using her bracelet. Her Snow White role connects symbolically to apples, reflected in her name "Ringo." On missions, she performs songs to collect "Happiness Tones" from human audiences to restore Fairyland, always accompanied by her light blue parakeet Ma-Pet, Sei, who poses as a pet parrot. Sei acts as a natural leader and sleeps beside her nightly. Ringo balances her ordinary life with her secret Lilpri duties, facing challenges like maintaining secrecy from her family and the public while managing her forgetful nature and school obligations.

Her relationships center on strong familial bonds with her bakery-running parents and seven younger brothers. With fellow Lilpri members, she engages in collaborative problem-solving during missions. Her interactions with Sei blend guidance and companionship. Across official media, Ringo's development maintains core traits of kindness and dedication, focusing on her growth in balancing responsibilities and teamwork within her established character arc.