Overview

Aki and her husband divorced, and her son ended up living with his father. The day before they left home, Aki was so lonely that he started having an affair with her son Naoya. From then on, Aki's purpose in life was to be able to meet her girlfriend Naoya once a year. Eventually, Naoya's father remarried, and Aki was worried that her mother-in-law would take Naoya away. After Naoya became her mother-in-law, the day came for her to meet him for the first time...