FNS-088 My little sister, who I used to think was just a kid, started teasing me with a glimpse of her underwear, and while our parents were away on a trip, it happened several times… Hamabe Yayoi

I returned to my parents’ home for the first time in a while. My younger sister, Yayoi, and I used to get along well when we were little, but we grew apart during my rebellious phase. When I saw her again after so long, she had grown into a surprisingly alluring young woman. Still, maybe she wasn’t fully mature yet, because her underwear kept showing far too often… or was she deliberately showing it? A single piece of fabric was pulled tight, barely covering her curves. There was no way I could possibly feel that way about my own sister…

Then our parents went on a trip. Left alone together in the house, the accidental glimpses didn’t stop. And before I knew it, my feelings toward my sister wouldn’t stop either. Once I crossed that line, there was no turning back, and while our parents were away, we kept getting closer again and again. I kept thinking there was no way my little sister could be this cute… or this tempting… and yet I couldn’t stop myself.