Today I'm writing on the topic of "Saitama delivery health: AV actresses compared."
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 dug up through research.
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 very same topic gets judged completely differently from "the customer's side" and "the girl's side."
What I can say from experience
I'll talk based on what I've actually been through myself.
I believe firsthand experience beats theory. In this industry especially, it's not "knowledge" but "reps" that do the talking.
My takeaway
The place I keep coming back to in the end is First Class Ruby. The reason it shows up over and over on this site is simple: it's a shop I'm an actual repeat customer at. Take it as a reference.