From 奥付 (okuzuke), the colophon at the back of the book — print number and date — and 風 (fu), wind: what stays written, and what moves in the market.
A dated market guide to Japanese Volume 1 first printings of popular manga: sold comps from the major marketplaces, turned into price bands, popularity tiers, and series charts. The catalog below is the public snapshot; the Letter is the deeper reading of the same tape.
Median in-band sale against copies per ¥100 million of the comic market during the first run. Score is two-thirds price and one-third that share. The diagonal stripes are the tiers.
Series titles are links - open one for its chart, colophon, and price band.
