The Imperial-Sealed Official Treaty is a document that includes the signature of the Mia Herald, confirming the Unicorn's ownership of the Snow Plains. It serves as a formal land transfer document, which must be witnessed by a member of the Imperial House to be valid. Competing documents were presented regarding the same territory: one is a signed and executed version that lacks the Imperial House seal, making it invalid, while the other is an unsigned draft referencing "Shishuro Amane and/or their descendants," suggesting a possible connection to the official treaty.
Ikoma Ichigo, a Lion scribe, examined the treaties and verified the authenticity of the Imperial-Sealed Official Treaty, noting its entry into the Imperial Record. He pointed out that the signed version of the competing treaty was missing necessary seals and required proper authentication. Ichigo's analysis identified discrepancies in handwriting and the absence of appropriate Imperial seals, critical for validating land transfer claims. The treaty played a pivotal role in court proceedings regarding the legitimacy of territorial claims and ownership of the Snow Plains, with various parties referencing it to support their assertions.