Japan - the home of pornographic manga and anime - is now seeing a worrying new trend.
A BBC documentary, presented by Roland Kelts, delves into the sexless lives of Japanese youth, and it seems to be spreading across the globe.
Recent reports from the US, UK and Germany also show dampening sex drives among the young, postponed marriages, fewer babies being born, reported theguardian.com
But in Japan, especially, the problem has reached dire proportions, with some dubbing it Japan's "virginity crisis". So what the University of Tokyo has done is compile a study based on the latest available data.