![Maruhi sennyû: Gyaku soap tengoku](https://image.tmdb.org/t/p/w200//a40FtgFikmdsp2VF03uue0HGfKa.jpg)
Maruhi sennyû: Gyaku soap tengoku
1 hour1992-10-23
2.0
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A university assistant professor spends his days researching. A hidden camera is installed at a reverse soap shop run by a friend of his, and he studies techniques by observing the reactions of female customers...