From that day my drunk stepfather mistakenly made me a stepmother and was violently raped at night

After marrying her husband, who has been on many business trips and continues to live with his parents, Ichika lives with two families at her husband's house. After retiring from work, I work hard at having children with my beloved husband, but there is no sign of him having children, and my husband, who often leaves home on business trips, is getting cold. The relationship between my father-in-law and my mother-in-law, who live with me, is generally good. However, he is dissatisfied with his stepfather drinking every day and getting drunk and ranting abusive words to his stepmother. One night, my stepfather gets drunk and comes into Ichika's room...