NACR-579 My brother's wife Nanako Hayata was turned into a sex slave by her husband's younger brother

I was living a happy married life with my kind husband. - Until my husband's younger brother, who doesn't have a job and stays at home, suddenly changes. - When we first lived together, my brother-in-law was kind and dependable. - But one day, her happy days were ruined by her brother-in-law. - I was raped. - When my husband went out to work, he played with me and started training me...