Girl In Captivity 2: Hitwoman in Chains.

An assassin-turned-housewife discovers that you can never really outrun your past when she crosses paths with a serial rapist with a taste for murder. Mizuki used to use her skills for seduction to lure men to their deaths. Now, she's about to face-off with her most deadly adversary to date. The only question when she does is which will be more intense - the pain or the pleasure?