When did it start? My sister's panties, which are surprisingly exposed despite her long legs, have been catching my eye more and more, and I've kept stealing glances. Gradually, the excitement from seeing her panties increased to the point where I couldn't hold back anymore. When my sister and I were alone in the room, I rubbed her thighs, stared at the warm crotch of her panties, smelled it, and took them off. I went at the female genitalia beneath her panties, and then I... This is the first serious drama work by Seijunpa, Otoshiro Sayaka.
