HHKL-169 - Erectile response to younger sister wearing an oversized shirt with only a bra and underwear. Kuramoto Sumire

My younger sister always wears my clothes without permission. She is petite, the opposite of my large build. I looked twice to see her wearing my shirt again, and to my surprise, she wasn't wearing a bra! And she wasn't wearing pants, just underwear visible. I was surprised and also became erect. My younger sister noticed the change in my lower body and suddenly became shy... We had never felt sexual attraction to each other before, but suddenly an erotic atmosphere developed, and we finally crossed the forbidden line! ※This work is a selection from the already released 'HUNTB512'. Please be aware that the content may overlap with previously released works containing multiple people.