RTP-104 My sister stayed over at my place while I was living alone. After sleeping next to her for the first time in 10 years, every time she turned over, her breasts were exposed! Unable to hold back, I was secretly masturbating when from behind, she sai

I live alone in Tokyo, and my sister came to stay over at my cramped one-room apartment. I slept on the futon, and she slept on the sofa... In the middle of the night, I woke up to find my sister sleeping soundly with her underwear fully exposed! At some point, my sister had turned into a girl's body, and I got excited, so I touched her pussy over her underwear while masturbating. Then my sister rolled over in her sleep! Shit! Busted! I hurriedly put my dick away and hid under the covers, but it was too late...