Kuro and select members of varying artists and engineers from the Sunaku clan and the Toraono Clan hard worked in secret since the foundation of the above ground village to create a series of warp stones to facilitate movement and storage of knowledge so no one could steal any of the copies of the ancient knowledge slo cowly filling the annals of this new and massive structure. Using images of Oracles from the past, which were mostly women Kuro had a carmot stone powered shin shun jutsu archival system built. This precision chakra engine would summon documents, relics, books, notes, and journals by specific chakra runes that correlated with a name and numeric system. Only select individuals of specific chakra signatures could take anything stored via this system outside the Oracle structure. Even then; the moment a pre specified date or distance from the oracle structure was reached the item was instantly warped back to its shelf inside the annals. Content with the structure's construction, defensability. Kuro sent out messages via couriers and discrete messengers to round up select knowledge hungry individuals. Kuro had a good idea of whom would show up but surprises were actually welcome in this case.
Now that they have built it, they will come.....
Rise of the Oracles Begins...