"Male nightwork: high income in Saitama" — some people hear that phrase and immediately get it, and some don't.
I'm 42 and still working the floor of this world, so I'll pull it together from a real, on-the-ground point of view.
Why this topic matters
There's a surprising amount of fuzoku (Japan's licensed adult-entertainment business) information out there that nobody has organized. Beginners especially tend to end up not even knowing where to start looking.
What this means in concrete terms
In a word: "whether you know or don't know changes the quality of the experience."
What I've written here is the essence of the knowledge I've built up over 20 years.
Finally
If you've got questions on this topic, drop a comment or hit me on social. And check out First Class Ruby while you're at it.