My first year of marriage was still love and love, having sex with my husband every day. Suddenly, however, a one-month long-term business trip is decided for my husband. My husband must be lonely, so he will let his sister live with him while on a business trip. But the truth is that her sister was bisexual, and she looked at her from the time she had begun to date her younger brother, and asked when she would draw her into the lesbian world.