Johnen: Love of Sada (2008)

Based on a true incident that was a national sensation in 1936. Sada Abe was a prostitute turned waitress who got into a heated love affair with her married employer Kichizo Ishida.
The couple would have marathon love making sessions that would last for days. Eventually Sada choked Kichizo to death - due to her account that she could not bear the though of him with other women - and then castrated his penis.She then placed the penis in her handbag before fleeing. imdb