Matsurida serves as a supporting character within the series. She oversees operations at Prism Stone, specifically managing Primagi performances within the concert hall and handling the administrative and operational aspects for individuals seeking to enter Primagi. Her name, written in katakana as マツリダ, lacks inherent meaning. The "Matsuri" (マツリ) portion potentially connects to the Japanese word for festival (祭り), while the "rida" (リダ) segment echoes in the name of another character, Fesrida. During Episode 1, Matsurida processes Matsuri Hibino's entry form after Matsuri decides to pursue Primagi. Utilizing a golden card, she summons Tanto-chan assistants who guide Matsuri through her transformation and provide her initial coord outfit. Later, Matsurida presents both Matsuri and Myamu with their Coord Book following their first successful performance and encourages them to continue. In Episode 13, Matsurida examines Myamu when Myamu loses her ability to speak and remains stuck in cat form. She determines magic cannot resolve the issue but theorizes that Myamu's own genuine desire to return to normal could make it possible. Details regarding Matsurida's physical appearance, personality traits, background story, character development, or appearances in other media formats remain unavailable.