I hadn't been back to my hometown in a while. My sister Yayoi and I were close when we were little, but we fell out during my rebellious phase. When I saw her again after so long, she had grown up in a rather lewd way. But maybe she's still not fully an adult? Her panties are showing... or is she intentionally flashing them? A piece of cloth wedged between her thighs, unable to contain her big ass. There's no way I could get aroused by a sister like that... Meanwhile, our parents go on a trip. Even at the empty family home, the panty shots don't stop. My lust for my sister won't stop either. Once I've gone that far, sex & sex while the parents are away. My little sister is so cute...so erotic... I thought, but I kept going anyway.
