Kairaku Shôten-buro

Nikkatsu Roman Porno, the second entry in the Maruhi Oo'oku Gaiden series. Recieving a mysterious foreign love potion, the Shogun's harem (or Oo'oku) becomes disordered; meanwhile a famous woman attempts to enter and seek revenge in the disguise of a male monk.

Everything goes wrong when Jiro tries to break up his mother's relationship with a business man. The young rebel Jiro has to deal with an environment of crime and prostitution, and the impact of its choices on personal relationships: one with his mother, one with her business man lover and one with the girl in love with him.

The amorous adventures of three shellfish divers who live and work in a rural fishing village.

A once-thriving village is in dire need of women to help with diving duties. Times are tough and the current diver is definitely no spring chicken, so the mayor’s son finds some beautiful maidens to fill the position. The arrival of the new recruits gets a rise out of the village’s male members.

As rumors spread about a hidden treasure worth 300 billion yen buried somewhere in the hills near a local inn and hot spring a large number of people check in with two things on their mind… treasure hunting by day and sex hunting at night. The geishas at the inn have their hands full as the inn is fully booked. A shrewd rich tycoon makes an offer to the owner to buy the inn. But she dismisses his offer and names a much higher price. The tycoon is reluctant until news that some actual gold pieces have been unearthed. But is the timing of this “news” a little too convenient?

Takao, a sex doctor who solves all kinds of sexual problems. Calling it group therapy, he solves the problems of all kinds of patients with unusual sexual fetishes one after another with his absurd extreme treatment methods. A comical, lewd doctor romantic porn.

A couple arrive by boat to a small fishing village where women dive for seafood. He is returning from a trip and he brings his latest girlfriend, a former hostess, with him. This causes jealousy with a local diver, a woman he had relationship with before he left. Meanwhile the other female divers find ways to satisfy themselves after a hard days work.

A small fishing village becomes the target of Mr. Matsunaga, a ruthless real estate developer who wants to turn the quaint area into a lucrative tourist attraction. Hiring a young, horny man named Junpei to bed the local ladies in an attempt to persuade them all to sign deals for their land, the lovely diving girls of the area succumb to his sexual desires. When the true intentions of the developer are discovered, the entire sleazy plan comes crashing down. Will the diving girls continue to grab their clams? Will Junpei finally find true love among the luscious naked nymphs?

In accordance with ancient rituals a landlady who runs a hot spring spa, known for its fertility, needs to conceive or she will be forced to leave. Meanwhile the owner of the spa is happy to indulge in the erotic attentions of the many geishas working there who have hopes to replace her if she fails in her duty.

The film is an adaptation of Nakano Yu's play "Sexual Beauty Techniques," serialized as a manga.