One night in Kyoto, a friend and I ended up in a room the size of a small Princeton double, drinking beer with two blond-coiffed Japanese men who, despite their doting, seemed anxious for us to leave. The place, called “Athena”, was a host club — a lounge where female clients pay for an all-you-can-drink bar menu and an hour or two of conversation with a well-dressed male attendant.