A neat and clean married woman is transformed into an obedient sex slave by hypnotizing and brainwashing English conversation materials! At home when her husband is not around, she sucks on the dick of a man she hates and begs for his dick in her newly learned English! She can never go back to her husband... She will continue to serve him as a perverted sex slave for the rest of her life! [Story] Rinka, a full-time housewife whose beloved husband is working away from home. With the free time she has, she is introduced to a man named Kashiwagi through her friend Mirai, who wants to resume studying English, which she loved as a student. Although she is confused by Kashiwagi's disliked atmosphere from the first impression, she is introduced to English conversation materials and begins studying English on her own, but the materials turn out to be brainwashing goods with a powerful brainwashing effect...