Sakiko sets off to find her father, guided only by a stash of letters he wrote, in hopes of bringing him to her dying mother.

• 为见父亲一面，咲子四处查访，终于知道父母的当年相爱却无法相守的哀婉故事，她决定在母亲去世前，为父母实现一个未能完成的愿望。