Since her husband's death, mother Yukka has been living with her son Yugo. She worked tirelessly to raise him alone, and Yugo grew up healthy and became a student aiming for a top university. It seemed like their hardships would be rewarded, and once Yugo entered society, they would have a happy life ahead…or so she thought. In the summer before Yugo's graduation, the Mizuno family met with his homeroom teacher, Oshima, for a career consultation. After what appeared to be a successful three-way meeting, Yukka was left alone and told, 'There is an issue regarding Yugo's advancement...'
