I'm in Tokyo now.
Thanks to all these valuable tips, I had fun this evening.
Used "Independence" as recommended.
You can just send an email. No need to use the elaborate form.
The location was not on a back alley, but just about twenty yards from the train station exit on the street that runs parallel to the train route. Otherwise, Draden's account above of his experience with Independence was identical to mine.
.
I took the ¥ 18,000 option ($115 thanks to the very weak yen) for a one-hour "swap": 30 minutes with one young man, then 30 minutes with a second one. The price is all inclusive and covers the room and all fees. No extra tip is expected.
Both guys were good at kissing and sucking. Both were good bottoms, although one was small and extremely tight.
One looked like his photo. However, the second guy was 6' and looked nothing like the 5'9" Dylan I'd picked, but he did speak fairly good English as was claimed for Dylan. And he was enthusiastic and talented.
I was erroneously thinking that the cost in Tokyo was wildly higher than the cost in São Paulo. But on reflection, that is not true. At Lagoa my total for the entry fee, two rooms, and two garotos could easily be 600 reals ($116, almost exactly the same price I paid in Japan this evening)!
Of course, in Brazil we get to do more preliminary screening — but that does not always guarantee the ace performances I got tonight in Japan. I still prefer Brasileiros and their saunas, but I'm happily surprised that my days in Tokyo will include some good company in bed.