After school, a man and a woman who seem to be teachers have a secret meeting in the club room where the students are gone. Fornication in the school seems to be a habit, and they begin to devour each other as if they had closed the lock of the club room with familiar hands. Excited with a large amount of squirting & a large amount of endurance juice with a feeling of immorality and thrill that life is over if you get caught. Even people who seem serious on the surface are actually hiding outrageous tendencies.