'Erika' will return home alone to her husband's 'Naoto' who is the third son of the three brothers. That night, Erika tells Naoto's family, who welcomed her, about her nighttime love affair with Naoto. Her brothers, who knew that her Erika was frustrated with her, attacked Erika, and her father-in-law, who was worried that she could not inherit her, tried to impregnate Erika with his own sperm.
