College student Ryousuke has spent years haunted by a single memory: his ex-classmate Shinobu confessing his feelings, only to vanish without waiting for a reply. The abrupt disappearance left Ryousuke devastated, his unresolved emotions hardening into an obsession to find the boy who had turned his world upside down. After desperately searching for what feels like forever, their paths finally cross again by chance in a crowded city street. Overjoyed and overwhelmed, Ryousuke's long-nurtured hope is shattered in an instant as he watches Shinobu walk away, hand in hand with another man.

This chance reunion in their contemporary Japanese urban setting forces both men to confront the past they left behind. Ryousuke is driven by raw, palpable longing and the frustration of a love that was never given a chance to begin. Shinobu, once open with his feelings, has since become more guarded and jaded, and the reasons behind his sudden disappearance and subsequent relationship are slowly unraveled as the story progresses. Their interactions are charged with the pain of miscommunication and the complex question of whether feelings left on hold can ever be rekindled.

As the narrative weaves between past and present, the initial shock of the reunion gives way to a deeper exploration of regret and acceptance. The story moves through the anguish of unrequited love into a more nuanced battle for emotional honesty, with both characters forced to scrutinize their vulnerabilities, fears, and true desires. While the story carries a dramatic and at times painful emotional weight, it ultimately navigates toward themes of self-discovery and the courage required to love again, resolving the characters’ long-unfinished business.