Original work: Doujin circle Yotsumata Shobo, Mother and Daughter's Threshold ~The Beginning of Hell~ AVOP-072

A month has passed since they moved to a quiet residential area. The once workaholic husband now spends more time with his family, and his wife, Yoko (Yuko Shiraki), lives happily with their eldest daughter, Ayumi (Ai Uehara), and second daughter, Mai (Misaki Hatsumi). However, the husband is dead… murdered by a group of men who suddenly break into their home. His company has gone bankrupt, leaving him with 300 million yen in debt. To pay off the debt, the mother is gang-raped in front of her daughters, who also lose their virginity. However, this is only…