The boyfriend I was supposed to be living with broke up with me, and suddenly my sister Sumire came back home. She's spoiled and selfish, but at least she's cute. Seeing her like that brought back memories. When I went to call her while she was relaxing in her old room, I found her playing with her own nipples masturbating. Her moans were something I'd never heard before. My dick got hard. She caught me peeking… From that day on, I helped my sister, who's obsessed with nipples, take care of her sexual needs, and I was able to fuck her in this incestuous summer fling.
