The Staircase of Sex

1967 Japanese movie

Pinku from 1966.

"Apartment Wife" pink film distributed by Shintoho.

A female university student in her third year, about to graduate next year, finds herself in a situation where her boyfriend's recently started business is taking off and keeping him busy, meaning they can't see each other often and their sex life has been on hold for a while. At that time, a female friend tells her that her boyfriend has a mistress contract with a businessman, but the contract is about to expire and he wants to sign a contract with a new woman, so he asks if she would take over.

The dark side of the mistress bank: a prostitution ring that is still thriving!

A man, engaged to his fiancée through a workplace romance, cheats on her with her female colleague. He becomes captivated by her sexual techniques and begins to want to break up with his fiancée. He asks his best friend to sleep with her, and his friend reluctantly agrees. They get her drunk and have sex, but this time, he falls in love with her instead...

Pink film by Giichi Nishihara.

Pink film by Giichi Nishihara.

A wife, frustrated by her husband's self-serving sex life, becomes interested in and excited by the glamour photos she accidentally sees in an S&M magazine. Unable to control her feelings, she invites one of her husband's drinking buddies to try S&M play, but her husband finds out. The wife insists that she was only tied up by the man and is the victim, but what action will her husband take?

A former yakuza has completely left the criminal world behind and now runs a bar as an honest man. One day, he picks up a woman who jumps into his car saying she has nowhere to go and needs help. Thinking she must have some kind of problem, he takes her back to his place, and the two, who hit it off, eventually start living together and get married. A year later, the woman, now a settled, gentle, and virtuous housewife, is suddenly confronted by another woman. She is a former colleague of the man, from when they worked together in a shady prostitution ring run by a yakuza gang. Told that she should apologize to the gang if she didn't want her husband to find out about her past, the woman goes to the yakuza gang as instructed, but is naturally imprisoned. When the man learns that his wife has been taken from him, he single-handedly takes on the gang to rescue the woman he loves…

Pink film by Giichi Nishihara.

Pink film by Giichi Nishihara.

Unemployed, Eiji comes up with a new business idea to support himself and his girlfriend, Junko. His plan involves approaching childless couples, arranging for the husband and Junko to have an open affair, and receiving a contract fee if she becomes pregnant. Junko works hard to conceive with the husband, while Eiji meets other women to alleviate his loneliness…

"Apartment Wife" erotic drama distributed by Nikkatsu for home video.

A woman stakes her fate on hymen reconstruction surgery.