A cute and elegant student, Nakajo Aoi, approaches a tired middle-aged man on the street. The slumped man is suspicious, but she hands him a can of coffee that appears to have been bought with her meager pocket money, saying, "I don't have a father, but the father I remember was very energetic and kind, so when I see someone who looks like my father looking down, I want to encourage him." The man is easily persuaded. After meeting her a few times, she begins to realize, "I come from a single-parent family, so I'm struggling financially..."