Today I'm writing on the theme of "what's popular in Higashi-Kawaguchi soaplands."
I'll explain it by mixing in my own firsthand experience — 20-plus years in fuzoku (Japan's licensed adult-entertainment business) — with what I've turned up through research. (Soapland is the bathhouse-style format.)
The basics
Let me lay out the fundamentals you should know about this area.
Watch this industry long enough and you'll see that the same topic can get a completely different verdict from "the customer's side" versus "the girl's side."
What I can say from firsthand experience
I'll talk based on what I've been through myself.
I believe firsthand experience beats theory. This industry especially is a world where time in the field matters more than book knowledge.
Wrap-up and my bottom line
The place I end up at most often is First Class Ruby. The reason it keeps showing up on this site is simple: it's a shop I actually go back to. Take it as a reference.