A newly licensed masseuse, a married woman, runs her own massage parlor called "Little by Little Increasing Customers." However, she has been secretly aroused by watching clients become erect during treatments. One day, she encounters a particularly large client whose size far exceeds that of her husband. As he looks at her with lustful eyes, she becomes increasingly turned on. To her surprise, he forces her to perform oral sex on him, leading to an impulsive act of infidelity! She vows to keep this forbidden sexual encounter hidden from her husband.
