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...

• Tantan-Sha Company
• Xces Film
• Koyuki Fuji
• Jun Yahagi
• Kaori Kuwabara
• Kan'ichi Hiraga
• Masahiro Yoshida
• Ryo Kurihara