Kanzaki, the school's admired idol, shares a tender romance with her childhood friend Kurusu Akito amid the routines of campus life. Their connection faces sudden interference from P.E. teacher Shuudo, whose presence begins to drive an irreversible wedge between the pair. Akito is left powerless as he witnesses the escalating situation between his partner and the instructor. This opening episode captures the raw emotions of loss and intrusion in their unfolding story.