When I went to my friend's house, my sister, who had just gotten out of the bath, appeared in front of me in a very defenseless outfit! It seemed like she couldn't see anything without her glasses, so she was mistaking me for her brother? This was my chance! I pretended to be her brother and looked at her boobs and ass, but the sister who was wearing glasses found out! I thought she would get angry, but she saw my erect penis and secretly jerked me off!