Hatsune Minori, troubled by persistent fatigue and poor health, began visiting a chiropractic clinic on her friend's recommendation. As rumored, the skilled therapist's treatments gradually improved her physical condition, yet she felt uneasy about the unusually intense massage techniques. Her suspicions soon became reality—her body, meticulously kneaded and loosened, progressively relaxed as wave after wave of pleasure overwhelmed her. Confused by this unfamiliar sensation, she convinced herself, "This is just therapy," and decided to return for another session.