Funshutsu kigan - 15-sai no baishunfu

Yasuko, Yoichi, Koichi and Bill are four high-school students who try to escape their overwhelming sense of alienation from the world around them by indulging in group sex, all to see whether they can forge their own path free of the corruptions of adult society. After revealing she has had an affair with her teacher, Yasuko is made to feel like a prostitute, with sex thus reduced to an economic transaction rather than something about pleasure. She sets out on an odyssey of self-exploration, the final goal being to see whether she can “beat” sex. (Berlinale)