Yuri was tired from playing the role of a straight-laced teacher. In reality, she was a perverted lesbian who wanted to be raped by the cock of a girl who was her student... One day, she took advantage of Mizuki's weakness when she was on the verge of being escorted out for shoplifting, and said, ``Why don't you indulge in a lewd lesbian relationship?'' Mizuki's immature body. He plays with her, makes her put a strap-on on her crotch, and has sex with her in the opposite direction... Mizuki, who was serious, becomes captivated by the stimulation... A forbidden plan to turn a perverted beautiful girl into a male!