Yuri, a teacher at an all-boys school, found pleasure in making men writhe and reach a "female orgasm" through anal stimulation, influenced by her perverted and masochistic husband whom she married a few years ago. Every night, she drove her masochistic husband wild with intense reverse anal sex using a penis band. One day, her nymphomaniac instincts were triggered by a masochistic male student she met at school. She taught him the pleasure of anal stimulation on the infirmary bed, and later invited him to her home, where she made him drown in the obscene pleasure of reverse anal sex...
