Sexual favors were often but not necessarily part of the bargain. Now it’s papa-katsu – a return to the mistress bank tradition in the sense that the women are older, usually in their early 20s; but ...

The 21st century introduced new refinements, packaged under the generic name papa-katsu. Spa (May 17) sums it up as a symbiosis between male libido and female profit-seeking – with sexual ...