SOAPLAND

When prostitution was made illegal in 1956, the brothels closed down and promptly re-opened as Toruko (from Turkish Bath). Following a complaint from the then Turkish Ambassador to Japan, the name was changed to Soapland, and is usually abbreviated to simply Soap. On entering a Soapland, you pay up front for an "assisted bath". Following the bath you then pay your naked "assistant" directly for further services, including full intercourse. Because you pay the woman directly, this is seen to be a transaction between two consenting adults, therefore not illegal.
Soapland workers have the reputation of being the most beautiful and most skilled, but since the 1980s the number of Soaplands has decreased to an estimated 1200, due largely to the high cost, typically $500 for full service.