Umezaemon Matsukaze attends Ginga Private Academy, a prestigious performing arts school situated on a remote headland. The academy's refined architecture incorporates waterways throughout its grounds, educating roughly 600 students across primary, middle, and high school levels.

Recognized early as a child prodigy, Umezaemon skipped elementary school due to his advanced intellectual abilities. This acceleration places him in classes with peers like Itsuki Kanade, despite the typical age difference for their educational level. His story unfolds within a narrative centered on a new transfer student arriving at the academy during spring.