Here's a magnet for that BBC Japan documentary.

magnet:?xt=urn:btih:FC87418483735C2CC21570A43E4B1AA34B07B09D&dn=BBC+Stacey+Dooley+Investigates+Young+Sex+For+Sale+In+Japan+720p+&tr=udp%3A%2F%2Ftracker.openbittorrent.com%3A80&tr=udp%3A%2F%2Ftracker.publicbt.com%3A80&tr=udp%3A%2F%2Ftracker.istole.it%3A6969&tr=udp%3A%2F%2Fopen.demonii.com%3A1337