JUX-107 Tied up wife - My wife was seduced by hemp rope... - Nanako Mori

A wife named Nanako, her husband Ryo, and their friend Tooru have known each other since their university days and have a deep bond where they can talk about anything. Neither Nanako nor Tooru have ever thought of each other as members of the opposite sex. Then, one night when Ryo is late at work, Tooru takes out the hemp rope and introductory book he bought to use on his younger girlfriend, and, half-jokingly, begins tying up Nanako as a practice dummy. <Her emphasized breasts> <Her exposed thighs> Tooru's gaze on Nanako gradually changes to that of a woman...