My brother's wife came to live with us, and I thought of her as a kind older sister. However, when my brother was away at work, my sister-in-law started playing naughty tricks on me. She'd say things like, "Isn't a woman's body softer and more pleasurable?" as she teased and touched me. Her words stirred something inside me, and I truly started feeling incredible. Later, I was caught masturbating while thinking about her. That moment made my heart race, and it remains an unforgettable memory.