When dental hygienists, trainers, nurses, and therapists get so absorbed in their work that they unconsciously press their large breasts against the man's crotch, causing it to swell. When he shows off his erection, he is confused at first, but when he says, "It's because of the close contact that I got an erection," he can't refuse and is forced to hold his dick, and when his breasts, which are the cause of the erection, are squeezed, his body reacts sensitively. And his desire escalates to the point where he demands sex!