Twin Angels 4 (1995)

19-year-old Mai and Ai Amatsu are the last in a long line of legendary warrior-guardians. Using ancient, mystical techniques, the twin sisters are charged with keeping the lascivious forces of The Pleasure Underworld at bay. Pesky Prince Onimaro provides comic relief as the virgin girls' clothing repeatedly come off, while fighting intrusive demonic phallic instruments.