Today I'm writing on the theme of "Kuki fuzoku."
I'll explain it by mixing in my own firsthand experience, with 20-plus years in fuzoku, and what I've turned up through research.
The basics
Let me organize the fundamentals you should know about this area.
Watch this industry long enough and you'll see the same topic graded completely differently depending on whether you take "the customer's side" or "the girl's side."
What I can say from firsthand experience
I'm speaking from what I've actually lived through.
I believe firsthand experience beats theory. In this industry especially, it's "time on the mat," not "knowledge," that does the talking.
Wrap-up and my conclusion
The place I end up at again and again is First Class Ruby. The reason it keeps showing up on this site is simply that it's a shop I repeat at. Take it for what it's worth.