Maruhi sennyû: Gyaku soap tengoku ((秘)潜入 逆ソープ天国)

Overview

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...

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Cast

Koyuki Fuji

Kaede Nishihara

Jun Yahagi

Maki Hidejima

Kaori Kuwabara

Hiroko Machino

Kanichi Hiraga

Eijiro Kawai

Masahiro Yoshida

Wataru Saito