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A husband so horny he outsources the job to his son-in-law. 1970s Japan was wild.
TMDB
43

The Key (1974)

psychosexual melodramavintage eroticamarriage as performance art

Overview

A college professor wants to bring the joys of sex to his frigid wife. He convinces his son in law to sleep with her because the idea arouses him, while also making him insanely jealous. The professor keeps a journal of his fantasies in a locked cupboard and hopes that his wife will find the key and read it.

Flag of JPJPJapanese
Content warning
sexual repression and liberationvoyeurism as intimacymasculine inadequacythe theater of marriage

Standout Aspects

Direction

Kumashiro's trademark blend of social critique and softcore experimentation

Writing

Diary-as-weapon narrative structure that's genuinely clever

Best for:Solo: Late night with wine and curiosity about Japanese New Wave sexuality·Date Night: Only if you want deeply uncomfortable post-film relationship talks
Heads up:Sexual Content: Frequent softcore scenes with that distinct 1970s Japanese aesthetic·Triggers: Coerced sexual situations presented as liberating
Tatsumi Kumashiro

Director

Tatsumi Kumashiro

ReleasedMay 4, 1974
Runtime1h 30m
StatusReleased

Vibe

Paceslow
Intensitymedium
Tonedark
Feelmedium
Nikkatsu Corporation

Top Cast

Moeko Ezawa

Moeko Ezawa

Hideo Kanze

Hideo Kanze

Yoshi Katō

Yoshi Katō

Kenzō Kawarasaki

Kenzō Kawarasaki

Chigusa Takayama

Chigusa Takayama

Taiji Tonoyama

Taiji Tonoyama

Tokuko Watanabe

Tokuko Watanabe

Ask about The Key

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Deep Dive

Trivia, insights & behind the scenes

Cultural

Part of Nikkatsu's 'Roman Porno' line, studio-mandated softcore that paradoxically became Japan's most artistically daring cinema of the 1970s.

Insight

Based on Jun'ichirō Tanizaki's 1956 novel 'Kagi,' which was considered unadaptable until Kumashiro cracked it by leaning into the theatricality.

Gallery

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