After being laid off from my job, I was taken care of by my older brother at his house for a while. When I arrived, there was no sign of him but 'Reika', my beautiful sister-in-law, greeted me warmly. She has always been kind and cheerful, and she's got an incredible pair of breasts that my brother never had. Ever since we first met, I've secretly admired her. As it turns out, my brother went on a business trip, which means Reika and I are left alone together in this house... My heart started racing at the thought of it. To my surprise, Reika seemed to know how I felt because she suddenly joined me in the bath or appeared in revealing attire, leaving my mind filled with thoughts about her huge breasts instead of preparing for job interviews.