Aki moved to Tokyo when she went to college, got married to a college senior and gave birth to Masaki. However, their young married life did not last long, and they divorced when Masaki was one year old. Aki quit her university and she worked hard to raise Masaki on her own. Before long, Masaki grew up and entered university. Aki, who has finished raising her children, is driven by her nostalgia, and she invites Masaki to return to her hometown.
