"Is masturbation not considered adultery?" I stayed in the same hotel for three consecutive days, and was degraded by my girlfriend's younger sister's little devil's masturbation, ejaculating 17 times before being taken advantage of. (Ishihara Nozomi MIDV-967)

To get my girlfriend, who's hesitant about sex, to agree, I mustered the courage to take her on a hot spring trip. To make things difficult, she brought her younger sister along… I thought she'd fail, but her sister turned out to be a hidden slut, seducing me as soon as we arrived at the hotel. "Won't using my hands prevent me from having an affair? I don't know…" Although I felt guilty, I couldn't resist her sister's devilish temptation. I… worried about being discovered by her older sister, who is my girlfriend, Nozomi. Now, her sister's lewd face and suggestive words excited me immensely; I've been slept with by her sister…