I am a part-time worker and currently live with my brother and his wife. My brother’s wife, Karen, is slender and incredibly beautiful. One day, I finished work earlier than expected and came home to find my sister-in-law with her hands on her breasts and crotch in the living room… I was so upset by this sudden event that I ran to my room as if to escape. That night, while I was taking a bath, my sister-in-law came into the bathroom completely naked…