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...
| Title | Maruhi sennyû: Gyaku soap tengoku |
|---|---|
| Release Date | 1992-10-23 |
| Runtime | |
| Genres | Comedy |
| Production Companies | Tantan-Sha Company, Xces Film |
| Production Countries | Japan |
