Earlier this fall I met a girl at a Tokyo deriheru who said she was coming to work in Daly City. She moved the map around the airport but wasn't familiar with the area, and we narrowed it down to thereabouts. It's cause the money is good. Run of the mill deriheru in Tokyo is 15k-25k yen per hour, plus options (they're big on options over there), with the "high class" deriheru at 30k and up. With the house taking a cut of let's say 50%, they would make much more here, where 50% of an hour is more than 20k yen in their pocket.