Domestic Mistress Contract: Kitano Mina ALDN-480

For three months, the older sister lived with her unemployed brother-in-law (who is also her husband) and younger brother. The younger brother paid his sister a small amount of money under the guise of doing housework. One night, seeing the older sister comforting her depressed brother-in-law, the younger brother felt a strange sensation in his groin. One morning, while cleaning the room, the older sister saw her brother's erect penis and also felt something was amiss. Then, while drinking together one day, she discovered that her brother had spent a lot of money in the sex industry. "Huh!? Spending so much money? That's wasteful! Give me that portion, hahaha!" Confused by his sister's words, the younger brother casually suggested it, and the older sister replied, "Hmm? It's okay if you give me money, right?" Under the influence of alcohol, a compatibility test was conducted in a strange atmosphere, resulting in both of them becoming excited and unable to stop... Although they both tried to accept it, they crossed the line, and their relationship escalated...