15 -year-old pretty girl on the Yamada family,enrolling in high school, concerned about a very important issue - how to lose her virginity and have fun. The serious reflections on the introduction into adulthood, " the liberation of women of the East" decided that her first partner is also bound to be a virgin to begin on equal thrilling and frightening ritual and follow it to its logical conclusion. And then - could not care less, and you can change a hundred guys... for the memories. Soberly assessing the external data and the volume of the male population of the school, Yamada felt that the problem if they are, it is only technical. classmate Takashi Kosuda, simple and kind boy - Soon the first victim was chosen. Here and began complexity -Kosuda hints do not understand, and by trying to go for decisive action at the very Yamada just " kicks plugs" do not help even the wise counsel of the heavenly sex consultant. So the heroes waiting for a long trial and error, gaining experience, learning from friends and relatives. But we believe - they will succeed!