Chie has been raising her son Kakeru since she was little. Chie struggles with housework and work for her sickly son, but Sho doesn't go to school and spends his days in his room with his friend Takayuki. One day, homeroom teacher Nakatani visits Chie, worried about Kakeru. "Teacher, what should I do...?" The night before, Chie was blamed by Kakeru for not having a father. However, as luck would have it, Kakeru saw him, and even Takayuki...
