Yuina has big blue eyes and very long, curled brown hair that surpasses her waist. She has straight cut bangs and long forelocks held by a tiny bow near the bottom, reaching her chest.
She wears a pink long-sleeved shirt beneath a chiffon ruffled shawl that has a brown fur collar and large red pom-pom sewn to the string tails. Her skirt is pink and yellow striped with chiffon trim and a print of faded cookies, white tights, and red baby doll shoes that have a beige bottom, pale brown fluffy cuff, and a pale yellow bow on the toe. She wears a pale beige muff over her hands with a dark blue bow, a heart-shaped purse, and a pink and chiffon frilly bow in her hair.
In the anime Yuina wears a dark cream-colored dress with a stitch design in the middle, pale yellow frilly petticoat, and a line of dull red on the hem. The upper chest and collar is pale yellow with a large ruffled copper ribbon. Her hair ribbon is entirely pink, and she gains white gloves. Her shoes keep their red color but change in design.
- Her birthday is June 4.
- Her blood type is AB.