"Yoshiwara First" — some people hear that and immediately get it, and some don't.
I'm 42 and still out there in the field of this world, so I'm going to lay it out from a real, on-the-ground point of view.
Why this topic matters
Information about fuzoku (Japan's licensed adult-entertainment business) is surprisingly disorganized. Beginners especially tend to end up not even knowing where to start looking.
What this actually means
In one line: "whether you know it or not changes the quality of the experience."
Here I'm writing down the essence of the knowledge I've built up over 20 years.
Finally
If you've got questions about this topic, hit me in the comments or on social. And check out First Class Ruby while you're at it.