Hi Lgirl ... welcome to he forum !
There are not too many girls in this forum so hope you will stay here and participate.
We normally refer Japanese girls as JG rather then Jap - being politically correct and all that.
Can you tell us a bit more about yourself other then what you wrote in your intro ?
To answer your question ...
In FS saunas some massage girls do spend a little time stimulating their clients' anus area but most will not penetrate.
As for us men ... if we like this or not ... OK guys ... put in your vote !