Momoko, a mother, has been living with her son Yugo since her separation from her husband. - Working hard with only one woman, Yugo grew up healthy and became a student who could aim for a top university. - From now on, all the hard work will be rewarded, and once Yugo becomes a member of society, a happy life awaits him...that was supposed to be the case. - In the summer before Yugo's graduation next year, Isshiki's father and son consult with his homeroom teacher, Takimoto, about his career path. - After a successful three-way meeting, Momoko is left alone in the classroom and is told that there is a problem with Yugo's admission to higher education.