"Fuzoku credit cards in Omiya" — some people hear that and instantly get it, others don't.
I'm 42 and still out there walking the floor of this world, so I'll lay it out from a real-world point of view.
Why this topic matters
There's a surprising amount of fuzoku (Japan's licensed adult-entertainment business) info that's never been properly organized. Beginners especially tend to end up not even knowing where to start looking.
What this actually means
In a word: "knowing or not knowing changes the quality of the experience."
What I'm writing here is the distilled essence of the knowledge I've built up over 20 years.
To close
If you've got questions on this topic, hit me in the comments or on social. And give First Class Ruby a look while you're at it.