I don't know in Japan, but in my country it is common to go together with friends or someone to have a HE massage or soapland (of course we choose different girl inside).
So i ask here if anyone interested to go together? because i speak a little japanese, so i don't have confident to go there...
i can make reservation with my limited japanese, as long as we choose the girl, and the course, i think it should be enough.
The important one is to have a conversation with the girl, so prefer a girl that can at least speak a little english