Toshi, who lives with her husband and son, one day her son, who had been bullied at work for not being able to perform his job, clung to his mother crying, saying, 'I've reached my limit. I don't want to go to work anymore.' Her husband, who was strict with him, said, 'Don't say such spoiled things and go to work.' But Toshi couldn't help but pamper him. In the midst of this, her son accidentally witnessed his parents' nighttime activities and felt anger and desire, thinking, 'While I'm suffering, Mom looks so happy...'.