OBA-079 In retaliation for being given a glittering name... I raped my mother. Takashima Izumi.

After she became pregnant with her second child, her husband Isao's condition deteriorated. She did not receive the wishes of Izumi and her eldest son Kunichi, and Isao passed away. His second son's naming will be in his will. Twenty-odd years later, the second son named Kunji was being bullied. He even refused to go to school. Izumi regretted seeing that, but every time Kunji called his name, his hatred for his mother grew. And finally, something about Kunji explodes...