Flesh Market
Flesh Market , Nikutai no Ichiba? is a 1962 Japanese film directed by Satoru Kobayashi and starring Tamaki Katori. It is generally recognized as the first movie in the pink film genre.
Only a 21minute fragment remains of the original film which ran 49 minutes. From written accounts of the film, it concerned a young girl played by Tamaki Katori who is captured by criminals while investigating the mysterious suicide of her sister in Tokyo.
Source: Wikipedia