A female track team member visits a chiropractor, expecting routine body maintenance—but instead, she faces an unexpected treatment. Targeted acupressure awakens erogenous zones she never knew existed, drawing out involuntary moans. "Is this really part of the treatment?" she gasps, as her inner voice betrays her growing arousal. Soon, her genitals are teased, her breasts groped, and she's forcefully thrust against. What follows feels like a natural extension of therapy—orgasm-inducing techniques that blur the line between healing and pleasure. "I never cared about sex... but something's wrong with my body, it's so hot down there..." she murmurs, her consciousness wavering. Kana Momonoki, the chiropractor with a sly smile, taunts her: "Come on, cum! Just cum! I'll pound you thoroughly!" In that instant, the girl's mind undergoes a profound transformation.