In the plot, Yuka’s son Kenichi has stopped going to school because of bullying, and he turned into an introverted guy who talks to nobody.
The homeroom teachers visit Yuka to check on the son, but they are very critic of him and recommend expulsion because of his poor academic performance, disregarding the bullying thing.
Yuka is outraged by this conclusion and confronts the teachers, who get angry too, and assault Yuka in the living room. All while Kenichi is in his room and dares not to come out.
Crazy ending too.