History of Women's Torture (1976) aka Zangyaku jokei-shi

The first story takes place during the Meiji Period (1868-1912). A general comes home from war only to find his daughter having an affair with some young lad. She must be punished! So they stick some bamboo rod in her. Second story is about a farmer who comes home from work to find his wife doing it with a priest. So he takes the huge scissors he used for work and stabs her in the crotch. Repeatedly. The remaining stories concern an ukiyo-e artist's exploits, a princess having her vagina torn apart by a bunch of horny ninjas and a female convict having her labia roasted during interrogation.

Lady Moonflower (1976) aka Yugao fujin

Kizaki kidnaps Yuriko and engages in a rape and torture session with her, which he photographs. With the photos, he blackmails aristocratic flower arrangement teacher Yumeji, Yuriko’s older sister. Rather than allow him to shame her clan by sending the photos to the media, Yumeji goes to Kizaki. Kizaki then proceeds to rape and torture Yumeji, who was his true desire all along.

Rope Hell (1978) aka Nawa jigoku

Akiko is the heir to a yakuza clan. Hitoshi, who has been kicked out of the rival Hono Clan after attempting to seduce Akiko, kidnaps her at the behest of Hanamura. Hanamura has formed a new gang and intends to use Akiko as a hostage to take over her clan's territory. During the torture and abuse sessions which follow, Akiko comes to enjoy the treatment and forsakes her gangland empire.

Flower and Snake I (2004) a.K.a Hana To Hebi

Shizuko, the dancer wife of a wealthy businessman, is ignored by her husband due to his high-pressure job. As a result, she begins to have a series of disturbing, masochistic fantasies. But her husband’s many debts lead to those fantasies becoming reality, whether Shizuko wants them to or not, when Mr. Tashiro, a powerful crime boss, kidnaps her as payment. He submits her to a series of sexual tortures for his own pleasure, but doesn’t realize that she may be enjoying the experience as well.