沖縄方言
Tetsuya Nomura based Yuna's overall design on hakama, but also wanted to give her outfit something that would flow and so gave her a furisode. Nomura said that her name means "night" in the Okinawan language, which contrasts with Tidus's name, which is Okinawan for "sun." For "Final Fantasy X-2", the game's staff wanted Tetsu Tsukamoto to redesign her costume to reflect her personality and the game's atmosphere.