Kanon, a neat and clean beautiful girl who works part-time at the library. Contrary to the intellectual atmosphere, the inner world is a little sadistic. - Seduce a middle-aged university professor who has set his sights and serve him abundantly. - Give a passionate so as not to miss a single drop of sperm, and squeeze sperm with Ma ● Ko. - Restricting a middle-aged father and playing with him as much as he likes is the pleasure of Kanon.