The restricted collection of the Sumeru Akademiya occupies three basement levels beneath the Hall of Lucent Cranes. Most of what is held there is classified not because it is dangerous, but because it is incomplete — fragments of scholarship the Akademiya has not yet been able to contextualize, marginalia that contradicts the published historical record, maps drawn before the Cataclysm showing coastlines that no longer match any shore. The scroll arrived in a batch transfer from the Amurta faculty archive approximately seven hundred years ago. Its catalog entry reads: origin unknown, contents partially legible, seal unclassified.

The seal is pressed in the lower-right corner of the scroll's second panel, approximately forty millimeters in diameter. The seven Archon seals, as recorded across the Akademiya's official documentation, follow a consistent geometric principle: each incorporates a central motif from the Archon's primary domain, bounded by an outer ring in the style of their nation's written tradition. The seal on this scroll follows the same structural principle. It is the correct style. It is the correct size. It does not match any of the seven.

The Library Director who first catalogued it noted in a 1341-year addendum that she had consulted a visiting scholar from Liyue — identity not recorded — who went pale upon seeing a rubbing of the seal and declined to comment. The addendum ends there. A later note in a different hand reads simply: "query this further when circumstances allow." No record exists of circumstances ever having allowed.

What the ley-line resonance survey conducted by the Amurta faculty in the Year of the Withering detected was this: the scroll produces a harmonic signature matching nothing in the Akademiya's resonance library. It matches, at ninety-one percent correlation, a region of the ley-line map that no longer has a corresponding physical location — a gap in the pattern that scholars consistently describe as a post-Cataclysm structural void. The eighth is not a theory. The eighth left a scar.