Deep Throat in Tokyo

Kumi Taguchi, a model, ends her relationship with her boxer boyfriend after he is injured. She soon marries Hideo, the heir to a large corporate family. Hideo's father, Takehiko, becomes attracted to Kumi and, wanting her for himself, arranges for Hideo to be sent away on a supposed business trip, which is actually a setup for his assassination by Takehiko's men. Takehiko then tries to seduce Kumi, but she refuses to perform oral sex. In response, Takehiko forces Kumi to undergo a surgical procedure that relocates her clitoris to her throat, making oral sex necessary for her to reach orgasm. Meanwhile, Hideo survives the assassination attempt by paying off the killers and returns home. In a confrontation, Hideo kills his father, but Kumi takes the gun and kills Hideo, allowing her to inherit the family's wealth.