Haruka once shared a short but intense romance with her middle school classmate, Akatsuki. Feeling trapped by their circumstances, the two impulsively planned to run away together—but Haruka failed to make it to their meeting place, and they parted without ever speaking again.Ten years later, Haruka reunites with Akatsuki when he appears as a business partner’s superior. However, he seems to have no memory of their past relationship. As lingering regrets and unspoken emotions resurface, the two must confront the truth about their separation and their lingering feelings for one another.