So from what I remember, the doujin included a father and daughter, and the father found the daughter attractive. Next I remember the father making a move on the daughter when she was showering and the mom went out. But as he was doing it, the daughter actually said she had feeling for the dad iirc. The remaining detail I’m not sure of, so I don’t want to confuse, BUT I think she ended up getting pregnant and giving birth, but they lied about the father and the most accepted it smth like that.