Aya Hana Amamiya visits a massage parlor that's been making waves online. Though unsettled by the shady older man who runs the place, she's drawn in by the offer of a free first session and decides to undergo treatment. Her entire body is worked over with expert techniques, eventually escalating to vaginal massage using a thick cock. Unexpectedly overwhelmed by intense physical sensations, she returns home trembling with pleasure, her mind and body completely consumed by bliss. This sudden, shocking experience drastically changes her everyday life.