To obtain the administrative scrivener qualification, Imakoka and Yokoyama are being taught by their friend's wife, Ayumi. Perhaps because she is a friend's wife, they are bewitched by Ayumi's pheromones. Having reached his limit, Imakoka begs Ayumi, 'If sex is out of the question, at least let me have oral!' and gets a blowjob. Later, when Yokoyama finds out about this and can't concentrate on studying, Ayumi gives him an erotic lesson.
