Miyoko (pseudonym) has been intensely drawn to anal pleasure since childhood, spending her elementary, middle, and high school years indulging in solitary anal masturbation. However, immediately after graduating from university, she convinced herself that "this way of life is unacceptable," resolved to suppress her anal desires, and decided to live as an ordinary woman. She later worked as a female teacher, got married, and gave birth to a daughter. Yet her innate, extreme anal masochistic tendencies could not be fully suppressed, and before long she began secretly engaging in anal masturbation in the restroom of the elementary school where she worked. Her habit was accidentally discovered by male parent N, who harbors a sadistic anal fetish. This video documents the intense, fetish-driven sessions in which Miyoko is tormented and repeatedly brought to orgasm by N, a sadistic anal enthusiast. The footage includes various extreme anal-centric acts such as insertion of foreign objects into the anus (corn, radish, octopus, tomato, liquor bottle, stuffed animal, carrot, cucumber, banana, eggplant, milk, vibrator head, king trumpet mushroom), double blowjob, bondage combined with BDSM and vibrator torture, milk enema (expelled while inverted in the "upside-down Fuji" position), and repeated anal climax stimulation. This is a genuine amateur recording submitted by real-life SM enthusiasts, with no scripted acting, production, or narrative elements typically found in commercial adult videos. The footage is raw, explicit, and intensely erotic.