After losing her husband in an accident, Rieko raised her son Yuugo alone. She worked tirelessly as a single mother, and Yuugo grew up to be a fine young man aiming for a top university. Things were supposed to get better from here on out; once Yuugo entered society, they would have a happy life…or so she thought. In the summer before Yuugo's graduation, the Hirashima family met with his homeroom teacher, Shiraishi, for a career consultation. After a promising three-way meeting, Rieko was left alone in the classroom and told, 'There is an issue regarding Yuugo's advancement.'
