[Female-Oriented Ejaculation Lecture] My girlfriend's older sister, Ayaka, a technical instructor, suddenly asked me to be a male model. I was blindfolded and repeatedly failed to ejaculate while being played with by a penis…! Ayaka Tomoda GVH-628

My girlfriend's older sister, Ayaka, whose job is veiled, is as an AV actress or a technical instructor at a sex shop. I, who came to help out, was there to fill in for the male model because he wasn't there. With only my penis exposed by the veil, I couldn't help but ejaculate under Ayaka's skillful manipulation. Even after the students ejaculated, my penis was played with until it became numb. What was supposed to be a lecture turned into a "How to Premature Ejaculation in Failure"...