"Omiya fuzoku, teens" — some people hear that and it clicks instantly, others draw a blank. (For the record: in this world "teens" only ever means legal adults, 18 and 19.)
I'm 42 and still out on the floor of this world, so I'll lay it out from a real, on-the-ground angle.
Why this topic matters
Information about fuzoku is shockingly disorganized. Beginners especially end up not even knowing where to start looking.
What this actually means in practice
In one line: knowing versus not knowing is what changes the quality of the experience.
What I've written here is the distilled essence of 20 years of knowledge.
Last word
Questions about this topic? Drop a comment or hit me on social. And give First Class Ruby a look while you're at it.