Unable to bear the sight of Toru failing his entrance exams twice, his father asks his friend's wife, Ichika, to be his tutor, but Toru is distracted by Ichika's beauty and body and cannot concentrate on his studies. Unable to bear the sight of such an ominous Toru, Ichika gives him a special lesson in perverted lewdness to release his pent-up sexual desires and refresh his body and Kokoro.