Unable to see his son Tatsuya, who is likely to repeat a grade, his father requested a tutor. A private tutor, Sayuri, was dispatched there and put her body in order to teach Tatsuya, her inferior student, a special naughty class. Thanks to that, Tatsuya will be able to concentrate on his studies... And the day before the test, he took a special class for graduating from virginity so that he could get a good score and aim for graduation.
