He married Kazuhiko, who had a child with him, and became the mother-in-law of Naosuke, his only son around that time. No matter how much Aika speaks to Naoya, he doesn't open his mind. One day, when he saw Naosuke's appearance being adored by his classmates, Aika went to his room. And when I cut out the story of my classmates, Naosuke who went upside down is a crime .... A secret event that should not be. However, Naoya told her bad friends about her relationship with her mother-in-law, and she had no wish for happiness.