My mother came to visit our town where my wife and I live. Seeing her looking so healthy, I felt relieved. That night, I accidentally saw my mother naked in the changing room, and an uncontrollable desire welled up inside me. I asked my wife for sex after a long time, but she turned me down. My body wouldn't calm down, and unable to resist, I made my way to my mother's bedroom. Gently pulling back her futon, I touched her warm body and, unable to hold back, erupted inside my mother...