The times when privately-owned cars did not spread, many people were not blessed with chances to go for a trip. Therefore many companies planned a recreational trip for an employee. Because there were many male employees in the company, the service using the women was liked.
There was the hot-spring resort that provided such service in each place of Japan. Katayamazu Onsen was the one, too.
In late years the people who felt a louche institution disagreeable increased as family visitors increased. However, there is the soapland which continues being open because demand does not disappear.