Akiko, a girl living a hard life after her father passes away and her mother's new boyfriend turns abusive, starts receiving encouraging letters from her 30-year-old-future self. Akiko also starts to get bullied in school, and her teacher Shinomiya tries to help her, but ends up losing her job. Akiko also unearths a story written to her by her father, telling her how he originally met her mother, who was the abused daughter of a politician.

讲述主人公岩切俊作是一名自来水公司的职员，工作就是拜访未缴纳水费的家庭，然后执行停水。某日，在全县执行限制供水指令时，他遇见了被遗弃的一对年幼姐妹。对于眼前这个穷困的家庭来说，水有多重要不言而喻。岩切对于要不要停水开始苦恼，但最终还是决定遵循规则，执行停水…

film directed by Masaya Takahashi