After becoming pregnant with their second child, her husband Isao's condition worsened. Despite Izumi and their eldest son Kunichi's wishes, Isao passed away. He named their second son in his will... Twenty-odd years later, their second son, named Kunji, was being bullied. He even refused to go to school. Seeing this, Izumi regretted it, but every time Kunji heard his name being called, his hatred for his mother grew. And then, something in Kunji finally exploded...