Daisuke visits his friend Naoya's home for the first time in a while to borrow a college report. While chatting with Naoya's mother, Kayoko, about old memories, Daisuke gradually grows tense. Kayoko casually touches his chest and moves her body close to his—an ordinary gesture for her, but a shocking one for Daisuke, who misreads the situation. Interpreting her actions as seduction, Daisuke can't hold back and confesses his feelings. He is naturally rejected, but insists, "It's because you're acting so flirtatious!" and aggressively presses her. Frightened by his intensity, Kayoko is stunned—yet ultimately gives in, whispering, "Just this once..."