Kôkyû Soap Technique 3: Kaikan Tengoku (1993)

Burdened with enormous debt to support her family, Kasumi became a prostitute to earn money. Hayama, an employee, had harbored feelings for her from the first time he saw her. Kasumi quickly became accustomed to her work as a prostitute, becoming a popular choice, driving men wild with her mat and shampooing techniques. Then, one day, she collapsed from a severe headache…