久美子達が２年生になった物語

InspiredbywriterSunitaBalsara'sexperiencewithtinnitus,OstinatofollowsNuha,acomposerwhoseestheworldasavibrantsoundscape.SheishavingthebestandgentlestkindofmorningwhenherplayingisinterruptedbyamysteriousTone.Asshestrugglestoconfineandbanishit,theTonegrowslargerandlouder,drowningouthermusic.OnlywhenNuhastopsfightingdoesshediscoverawaytoincorporatetheToneintohermusicandlife.