A sister-in-law whose parents remarried and ended up living together. - I'm obviously hated. - Well, if I don't leave the house or take a bath, I wonder if they'll hate me if I look at them lewdly... - However, she is a really nice woman, so I want to get her somehow. - So, I added a small amount of aphrodisiac to my stepsister's drinking water every day to gradually make her more sensitive, and I touched her so much that she couldn't resist, making her cum and fucking her! - My sister-in-law becomes more erotic day by day and becomes unable to resist!