An invitation to their high school reunion arrives, giving Takashi and Kayo a chance to reunite with former classmates after a long time. However, due to work commitments, Takashi is unable to attend, leaving Kayo to go alone. At the long-awaited gathering, some of her old friends grow envious of her happy married life. Among them, Kota harbors particularly intense feelings. Old bonds between classmates and the sight of friends now walking different life paths stir a whirlwind of emotions.