You are right hiroko, but at the same time these girls are working at these bars to earn a living. If the management is vigilant enough to make sure that these girls dont come any harm i would support them. But a lot of times bars get unruly after quite a few drinks in them. So if it was a non alcoholic cafe i woul feel they would be safer. But if it's a bar they should have a strong security team hidden away to take care of the unruly customers. Yes a lot of children are made to act like adults now a days, take AKB48 for instance.