Iyori Matsumoto

Iyori Matsumoto is Shuu's mother. They are neighbors with Emily and Masakiyo. She loves music and used to play Bass Guitar during middle school. She was keeping that a secret but Sayane's mother who went to school with Iyori told everything to Emily who then let it out when they were all at her house, which embarrassed Iyori who considers that time in middle school as her reckless teens.