"Saitama, delivery health (the girl comes to you), pretty young girls" — some people hear that and instantly get it, and some don't.
At 42 I'm still out walking this world in person, so I'll put it together from a real-world angle.
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 that actually means
Put simply: whether you know or don't know changes the quality of the experience.
What I've written here is the distilled essence of knowledge I built up over 20 years.
To close
If you've got questions about this topic, hit me up in the comments or on social. And give First Class Ruby a look while you're at it.