Europe's strongest entertainment industry FKK invades! FKK is a facility where both men and women pay an entrance fee and can enjoy buffet-style meals, drinking at the bar, bathing, etc. at no additional charge. However, the true fun of FKK is when male customers negotiate with female customers and receive sexual services. A ``resort-type adult entertainment shop'' that is like a combination of a spa resort and an adult entertainment shop. Such an adult game