Kana, a part-time housewife living with her husband, recently started inviting a visiting masseur to their home on weekends to help relieve her husband's complaints of stiff shoulders and lower back pain. The treatment was thorough, and her husband seemed extremely satisfied. Watching him with a warm smile, Kana hesitated slightly when he suggested, "You should try it too, if you want." Reluctantly, she agreed to a light massage. But unexpectedly, the therapist began obsessively targeting sensitive areas, and Kana found herself trembling with excitement from the sensation...!