Yaya is main character Naru's best friend whose parents work in a noodle shop. She possesses both brains and beauty, making her very popular at her school, but has messy handwriting. She is particularly clingy towards Naru and gets jealous when she becomes friendly with others. She is initially hesitant towards yosakoi and joins the club in name only, but after her dream of forming a band falls apart, she soon joins the club in earnest. Her favorite flower is the rose.