Rewritten Artbook: Alice in Crystal Wonderland, Pool or tag?

For this title: "Rewritten Artbook: Alice in Crystal Wonderland"

Associated posts:
post #2600493
alice_in_wonderland kanekiru (all posts up to this time)

Here's the main profile for the group, although not all posts can be found their: https://rewritten-artbook.deviantart.com/

Would this be better served as a copyright tag or a pool?