"Graduation" centers on a group of high school seniors navigating the final months of their academic journey, grappling with the pressures of impending adulthood, personal aspirations, and the complexities of their relationships. The narrative unfolds in a small coastal town, where the serene backdrop contrasts with the emotional turbulence experienced by the characters.

The protagonist, Haruto, is a reserved yet determined student who struggles to reconcile his passion for photography with his family's expectations to pursue a stable career. His best friend, Aoi, is a spirited and ambitious athlete aiming for a sports scholarship, but her confidence wavers as she faces unexpected setbacks. Meanwhile, Rina, a classmate with a sharp intellect and a guarded demeanor, hides her struggles with familial expectations and her own insecurities about the future.

As graduation approaches, the group confronts pivotal decisions that will shape their lives. Haruto's growing bond with Rina deepens as they collaborate on a school project, revealing shared fears and dreams. Aoi's journey takes a dramatic turn when an injury threatens her athletic aspirations, forcing her to reevaluate her identity beyond sports. Secondary characters, such as the supportive teacher Mr. Saito and the enigmatic transfer student Kaito, add layers to the story, offering guidance and challenging the protagonists' perspectives.

The series explores themes of self-discovery, resilience, and the bittersweet nature of transitions. Through intimate moments and heartfelt conversations, the characters confront their fears, celebrate their achievements, and come to terms with the inevitability of change. The narrative balances emotional depth with moments of levity, capturing the essence of youth and the universal experience of stepping into the unknown.