Yuna is a thirteen year old with a very youthful appearance with a small frame and large, sharp purple eyes. Her long yellow hair is worn in pigtails that curl on the end, each held by a white ribbon, and she has thick bangs with thin forelock strands that reach her chest.
Yuna wears a white sundress with ruffles and buttons going down the middle and a tiny bow residing on each shoulder strap. She also wears a white bracelet on each wrist, and white baby doll shoes with two bows on each foot and a brown platform bottom. In the anime, Yuina's dress is heavily modified, along with her shoes, which are now sandals and lack their bows. She also gains a wing necklace and loses her bracelets.
- Her birthday is June 12.
- She is the third oldest in the Wakaba Party.
- She is the tallest girl in the Wakaba Party.
- Her blood type is O.