Aki moved to Tokyo for university and married a senior student, giving birth to Masaki. However, their young married life didn't last long, and they divorced when Masaki was one year old. Aki dropped out of university and worked desperately to raise Masaki alone. Eventually, Masaki grew up and entered university. After the child-rearing phase settled down, Aki was driven by homesickness and decided to return to her hometown with Masaki.
