Nakajima Enterprises' married woman training series has been receiving great acclaim, and now a special title focusing on "anal training" has been produced for AV Grand Prix. As the affair deepens, these married women seek new thrills—leading them into anal training. This abnormal discipline pushes the housewives to the limits of humiliation, intensifying their arousal until their secret lips grow wet. Four married women in total expose their shame-filled, pleasure-drenched forms. This film symbolizes how the choice of anal training further deepens their relationships.