"Omiya soap, the popular shops" — some people hear that and know exactly what it means, and some don't.
I'm 42 and still out there walking these floors, so I'll lay it out from a real-world point of view.
Why this topic matters
Information about fuzoku (Japan's licensed adult-entertainment business) is surprisingly disorganized. Beginners in particular often don't even know where to start looking.
What it actually comes down to
In a word: whether you know or you don't know completely changes the quality of the experience.
What I've written here is the essence of everything I've picked up over 20 years.
One last thing
If you've got questions about this topic, drop a comment or hit me on social. And go check out First Class Ruby while you're at it.