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The Key-Issue Database

Every key that matters, across every series we cover — the tankōbon, the magazine first appearances, and the English editions — in one filterable place. Curated by the desk, not scraped from a feed.

Series ▾	Key ▾	Format	Tier ▾	Year ▾	Desk read

How to read this Tier is collectible weight, not fame — a Grail or a magazine 1st appearance outranks a famous-but-common finale. Desk read is our current stance, not a price. This list is curated and updated by hand as we build each series hub; it's the judgment layer, not a live market feed. Always confirm a specific copy's printing and price to real sold comps before buying.