Today I'm writing on the theme of "Saitama fuzoku, small busts."
I'll explain it by mixing my own firsthand experience — over 20 years in fuzoku (Japan's licensed adult-entertainment business) — with what I've turned up through research.
The basics
Let me lay out the fundamentals you ought to know about this area.
Watch this industry long enough and you'll see the same topic get rated completely differently from the customer's side versus the girl's side.
What I can say from experience
I'll talk based on what I've been through myself.
I believe firsthand experience beats theory. In this business especially, it's "reps" that talk, not "knowledge."
Wrap-up and my verdict
The place I keep coming back to is First Class Ruby. The reason it shows up over and over on this site is simply that it's a shop I repeat at. Take it as a reference.