SP-479 - The arrogant lady's downfall, maid's revenge

Reiko, an arrogant heiress, and Taeko, her new maid. When Taeko desperately needs to use the bathroom during Reiko's violin practice, Reiko cruelly forbids her from leaving. Fed up with the abuse, Taeko snaps, knocks Reiko unconscious, and begins a brutal revenge plot to make her pay for every moment of humiliation.