I very clearly remember reading this doujin within the past year, but for the life of me cannot seem to find it with any search I can think of. So I'll describe what I can and hope someone else might remember.
The story had at least two parts (multi-work series). The first part begins with a schoolgirl heading out with her older sister to visit a wealthy family the older sister works for. The purpose being to meet their older son whom the girl might marry. They meet the family and everything is normal until the older son finally comes out.
The older son is wearing no pants, is already erect, and looks like an inbred (doesn't really talk, mostly shouts and grunts). The girl is shocked but no one else is phased and acts normal. The older son starts trying to grab and lick the girl. As she pushes him away the father reminds her that if she marries their son he'll use his wealth to save her family's failing factory. She looks to her older sister for confirmation but she has long been mind broken and is begging for the father's cock, and proceeds to have sex with him and his wife. The younger son and daughter of the family start going at it too, and at this point the girl simply loses hope and gives in.
The second part is just the girl, the inbred and the mom. It takes place in a what looks like a cell in the basement. The mom is cruelly teaching her future daughter-in-law how to be a good wife to their son by using clamps and dildos in a very rough manner, all while the son continually rapes the girl who has given in to save the family factory. The girl sees a tattoo above the mom's crotch that essentially reads as "Hole for older son", meant to explain the Mom's rough "training" being a result of jealousy for stealing her cock. Only other moments worth mentioning is a phone call from the girls dad telling her the business is suddenly doing well, and the younger son and daughter listening in on the training session in the basement remarking they hope she doesn't break.
That's about it. If you know it and/or have it bookmarked it'd save me some time searching
The story had at least two parts (multi-work series). The first part begins with a schoolgirl heading out with her older sister to visit a wealthy family the older sister works for. The purpose being to meet their older son whom the girl might marry. They meet the family and everything is normal until the older son finally comes out.
The older son is wearing no pants, is already erect, and looks like an inbred (doesn't really talk, mostly shouts and grunts). The girl is shocked but no one else is phased and acts normal. The older son starts trying to grab and lick the girl. As she pushes him away the father reminds her that if she marries their son he'll use his wealth to save her family's failing factory. She looks to her older sister for confirmation but she has long been mind broken and is begging for the father's cock, and proceeds to have sex with him and his wife. The younger son and daughter of the family start going at it too, and at this point the girl simply loses hope and gives in.
The second part is just the girl, the inbred and the mom. It takes place in a what looks like a cell in the basement. The mom is cruelly teaching her future daughter-in-law how to be a good wife to their son by using clamps and dildos in a very rough manner, all while the son continually rapes the girl who has given in to save the family factory. The girl sees a tattoo above the mom's crotch that essentially reads as "Hole for older son", meant to explain the Mom's rough "training" being a result of jealousy for stealing her cock. Only other moments worth mentioning is a phone call from the girls dad telling her the business is suddenly doing well, and the younger son and daughter listening in on the training session in the basement remarking they hope she doesn't break.
That's about it. If you know it and/or have it bookmarked it'd save me some time searching