"Fuzoku in Kawaguchi City, hand-picked" — some people hear that and know exactly what it means, and some don't.
I'm 42 and still out there walking these streets myself, so I'm going to lay it out from a real-world point of view. (Fuzoku is Japan's licensed adult-entertainment business.)
Why this topic matters
Information about fuzoku is surprisingly poorly organized. Beginners especially tend to have no idea where to even start looking.
What this actually means
In one sentence: whether you know it or not changes the quality of the whole experience.
What I'm writing here is the essence of the knowledge I've built up over 20 years.
Closing thoughts
If you've got questions on this topic, drop a comment or hit me on social. Go check out First Class Ruby too.