Portio is a hidden erogenous zone that would never wake up if it was normal. This feeling was awakened when she visited a massage parlor with a good reputation among beauty enthusiasts... At first, it's a common massage that relaxes the entire body. However, I may have been looking for more of the "edge", more of the "inside", and more of the "inside" from the oil massage. Before she knew it, the masseuse's fingers had entered her vagina and reached Miki's portio. Once this happens, I can't go back. The data of 100 million yen BODY has been tampered with and even the inner muscles have been turned into erogenous zones! She straddles herself on top of the masseuse and becomes intoxicated with pleasure as the penis reaches the portio...