Amai Muchi

Amai Muchi (甘い鞭) is a 2013 Japanese erotic drama film directed by Takashi Ishii, based on a novel of the same name by Kei Ōishi and starring Mitsu Dan, Yuki Mamiya and Tsuyoshi Nakano. It was released on 21 September 2013.

Plot
While working as a doctor that treats infertility, Naoko is also the Celica, a masochist girl at SM clubs. She treats patients who adore Naoko like a virgin, and men who want Celica like a true masochistic girl who arouses sadistic feelings. Her double life began when she was 17 years old and endured a terrible incident.

Cast

 * Mitsu Dan as Naoko Misaki
 * Yuki Mamiya as 17-year-old Naoko
 * When she was 17 years old, Naoko was abducted and held captive by a man who lived next door, and after being toyed with for a month, killed him and barely escaped. She grew up with tremendous trauma and now, while she is gaining recognition as a doctor specializing in infertility treatments, she is also Celica, the popular masochist girl at SM clubs.


 * Tsuyoshi Nakano as Takeo Fujita
 * He kidnapped 17-year-old Naoko and locks her in the basement of his house. He treats her as a sex slave for a month but is ultimately killed by her.


 * Hiroko Nakajima as Kayoko Misaki
 * Naoko's mother. At first, she was worried for Naoko's safety, but after the case was resolved, she was unable to accept the reality of the violence her daughter suffered, causing a rift in their relationship.


 * Hiroko Yashiki as Keiko Kinoshita
 * Owner of the SM club that Naoko works at as Celica.


 * Shun Nakayama as Narumi
 * A bouncer at the SM club and Kinoshita's right-hand man.


 * Naoto Takenaka as Daigo
 * A top customer at the SM club.


 * Yōzaburō Itō as Kamiyama
 * Customer of the SM club.