ALDN-140 Stepmother fell asleep on the sofa and that was the end

A few of us returned to my parents' house, where my mother lived alone. I was a little lustful for my mother's naked body that I accidentally saw. The next day, I couldn't stand my mother's defenseless appearance while napping, and I played a cruel trick on her. After that, I went out, but when I came back to get something I had forgotten, I witnessed a kiss between my mother and father at the liquor store. Seeing my mother turn into a woman and look for a man, I got an erection...