FNS-088 My little sister, until recently I thought she was just a little rascal, started showing me her panties and seducing me, so while my parents were away on vacation, I had sex with her multiple times... Yayoi Hamabe - 浜边やよい

I returned to my parents' house after a long absence. My younger sister, Yayoi, and I were very close when we were little, but our relationship soured after my rebellious phase. When I saw her again after so many years, she had grown into a stunningly beautiful woman. But she wasn't fully mature yet; her underwear was always showing... or rather, was it really showing...? The fabric was deeply etched into her crotch, barely concealing her ample hips. How could I possibly arouse someone like my sister...? Later, my parents went on a trip. Even when it was just the two of us at their house, her underwear was always gleaming. I simply couldn't control my lust for my sister. Once I made my move, it was over, and then when my parents weren't around, we would make love endlessly. My sister couldn't possibly be this cute... or this sexy... but even though I thought that, I still insisted on having sex with her.