The Japanese exploitation franchise Ninja Women rolls onward with the erotic installment Onmitsu Kunoichi Ninpouchou: Gaki Shimai (2004). This chapter in the saga adds blood loyalties to the mix, as the principal fighters are sisters bound by blood and a nasty predilection for violence. Syoko Mikami and Reina Shindo play the female fighters who indulge in taboo sex and autoerotic teasing when they’re not slicing bad guys to ribbons.