SSNI-849 From that day on, I was raped all night by my ugly stepfather who mistook me for his wife. That day was Ichika Hoshimiya.

Due to frequent business trips, her husband chose to live at his family home, prompting Ikka to start living with her in-laws. After retiring from her job, she strives to have children with her beloved husband, but there are no signs of pregnancy. Her marital life has grown cold due to her husband's frequent absences on business trips. Her relationship with her cohabiting father-in-law and mother-in-law is generally good. However, she is dissatisfied with her father-in-law drinking alcohol every day and speaking rudely to her mother-in-law when drunk. One night, her drunken father-in-law enters Ikka's room...