Aika, a member of the school table tennis club, injures her leg during practice and, on her parents' advice, begins visiting a local chiropractic clinic. Her therapist appears kind at first glance, but his gaze carries a slightly unsettling edge. During her first session, his massage hands wander toward her chest, buttocks, and private areas. Gentle and obedient by nature, Aika accepts it all without resistance. The chiropractor explains, "If you're sensitive to the pressure from my fingertips, it means the treatment is working on the affected area," as he continues his lewd therapy. Overwhelmed by the stimulation, Aika repeatedly reaches climax, her big-breasted frame succumbing completely to pleasure.