Today I'm writing on the theme of "popular fuzoku in Yoshiwara."
I'll explain it by mixing my own firsthand experience — over 20 years in fuzoku (Japan's licensed adult-entertainment business) — with information I've dug up.
The basics
Let me lay out the fundamentals you should know about this area.
After watching this industry for a long time, I've seen the same topic get evaluated 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 actually been through.
I believe firsthand experience beats theory. In this industry especially, "mileage" talks louder than "knowledge."
Wrap-up and my conclusion
The place I keep coming back to is First Class Ruby. The reason it shows up over and over on this site is simple — it's the shop I personally keep repeating. Use it as a reference.