The weave of a Shard Memory was subtly different from an ordinary one. They possessed some unique qualities, after all, like the ability to remain in existence after the owner's death, or the hidden purpose of manifesting the Oath Keys after all seven had been gathered in one place.
Luckily, Sunny possessed two Shard Memories of his own — the Midnight and Moonlight Shards — so he already knew how to find and isolate these sections of the tapestry, which was supposed to make the task of deciphering the rest of it easier.
…In theory.
In practice, the spellweave of a Shard Memory was even more labyrinthine than that of a normal Memory. Sunny had managed to gain a sufficient level of understanding of the Midnight Shard — enough so to apply a part of its enchantment to the Siege Souvenir — but the Moonlight Shard still remained beyond his grasp.