MADV-270 I felt like a woman in my defenseless sister. 2

I thought she was still a child, but when did she become so much of a woman's body? One day, I found myself aroused by my sister's body. When I got home, my sister Uta was home alone. She told me that our parents had gone out. She got sleepy and returned to her room saying she was going to take a nap. When I passed by her room, I saw her masturbating with a vibrator! Her breathing was heavy... and before long, my eyes fell on her moist, shaved pussy as she began to breathe soundly in her sleep... This is the fourth naughty episode in which I felt a forbidden desire for my sister's defenseless body!