[HUNTA-362] I became the climax development personnel for my cldhood friend who had never experienced an orgasm before?! She was popular in school because of her lustful nature, but she had never climaxed with a man before! She wanted to experience the pleasure of her first orgasm, so she asked me, an unremarkable and virgin guy, to help her practice... But being a sex assistant without any romantic feelings is too humiliating...