Eriko, a mother worried about her son who has become a hikikomori. Her husband is too busy with work to face his son properly, and her mental strain only builds up. She decides she can't go on like this and confronts her son. However, the enraged son shouts, 'Women are all selfish creatures!' and pushes his mother down, raping her. Afterward, coming to his senses, the son starts blaming himself. But Eriko says, 'It's okay, I love you,' and hugs her son. From that day on, an incestuous parent-child relationship begins...
