It's been three years since I've been watching my little sister's unconscious panty shot, and I've finally crossed the line.

I wonder when it will be? My younger sister's panties are so long that she's too defenseless, I've been keeping my eye on them, and I keep looking at them. Gradually, my excitement grew and I finally couldn't hold back. I was alone with my sister in my room, so I rubbed my sister's thighs, stared at the warm panties at the base, smelled them, and took off my clothes. She sighs on the female genitals behind her panties, and then she even gives my dick... This is the first full-fledged drama that Otoshira Sayaka, the pure-minded person, challenged.