The innate page already says why it sits beside the catalog: a Lifelong Contract is the hinge. Sign, and the old art goes dark. Cut the knot, and it limps back. Uruha’s Crimson Recital waits under Kumeyuri. Shiba will not sign because teleport would go dark. Subaru’s several bodies make a killing-open a nightmare. Magatsumi’s contract is the master key for the other five wartime bearers.
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The contract as a hinge契約
Two lists. One signature between them.