Shukketsubo ~Senaka no Oetsu~

One day in May, a new chemistry teacher assumes his duties at a Junior College. He is Kengo Inui, a man blessed with a sharp mind, great athletic skill, and handsome looks. In spite of these gifts, or perhaps because of them, his heart is that of a black devil. It was some months ago that he let the devil come out and work its skills on the beautiful women around him, but he had crossed a line then. Now at his new posting, he is finally free to explore his evil passions once more.
The hunt is beginning again...