Perfect Education 4: Secret Basement (2003)

AKA: 完全なる飼育秘密の地下室, Kanzen-naru shiiku: Himitsu no chika-shitsu, 완전한 사육 4: 비밀의 지하실, 禁室培欲4：秘密地下室, 禁室培欲 4：秘密地下室 | Directed by Toshiyuki Mizutani | Country: Japan | Language: Japanese | 110 Mins

Cast: Taro Yamamoto, Hisako Shirata, Naoto Takenaka, Haruko Katō, Yuriko Hirooka, Satoshi Izumi, Kenichi Matsuyama, Takuji Suzuki

Subtitles : English, Chinese

Synopsis (Google Translate)

A shy, nerdy man, Takeru finds a schoolgirl hooker Lily is unconscious in a Tokyo park, so he decides to bring her home and lock her up in a secret basement. Although Lily is afraid of him, in fact, Takeru didn’t do anything to hurt her. After Lily begins to uncover a shocking episode

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