Iroha is in her fifth year of marriage. Although they have not been blessed with children, she feels happy in her marriage with her honest husband. However, her married life changed dramatically when her husband's younger brother moved in. Perhaps because he is much younger than her, he is still young and has not yet had time to look for a job. He is a so-called NEET. When her husband comes to work, he approaches Iroha and plays pranks on her. When she refuses, he starts screaming and becomes violent. She is unable to talk to her husband about this and spends her days...