A teacher named 'Yuri' at an all-boys school has, due to the influence of her perverted and masochistic husband whom she married several years ago, found pleasure in making men writhe and reach orgasm through anal sex. Every night, she drives her masochistic husband wild with reverse anal sex using a strap-on dildo. One day, Yuri's lust was aroused by a masochistic male student she met at school. She taught the student anal pleasure on the bed in the nurse's office, then invited him to her home where he became engulfed and driven mad by the obscene pleasures of reverse anal sex...
