Rieko, a mother who lost her husband in an accident and has lived with her son, Yugo. Yugo worked hard with only one woman's hands and grew up to be a student who could aim for a prestigious university. From now on, the hard work will be rewarded, and a happy life awaits Yugo when he becomes a member of society... It should have been. In the summer before Yugo's graduation next year, Hiraoka and his family have a career consultation with their homeroom teacher, Shiraishi. After an auspicious three-way interview, Rieko, who was left alone in the classroom, was told that there was a problem with Yugo's going to school.