SXMA-018 Shangri-La Beauty Salon, Lusty Toys Part 11: The trembling erection and the melting secret

Our customer this time is Nanako-chan, a refined and elegant young lady. She looks a little anxious about what's going to happen to her. She's given a special drink to improve blood flow, and then the treatment begins! She seems to be a very sensitive girl, and even though it's just a normal massage, her body reacts with twitches, and her crotch is so tight it looks like it's about to spill out...